View U4091BMNBSP_324274.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

U4091BM
Programmable Telephone Audio Processor
Description
The programmable telephone audio processor U4091BM is a linear integrated circuit for use in feature phones, answering machines and fax machines. It contains the speech circuit, tone-ringer interface with DC/DC converter, sidetone equivalent and ear-protection rectifiers. The circuit is line-powered and contains all components necessary for signal amplification and adaptation to the line. The U4091BM can also be supplied via an external power supply. An integrated voice switch with loudspeaker amplifier enables hands-free or loudhearing operation. With an anti-feedback function, acoustical feedback during loudhearing can be reduced significantly. The generated supply voltage is suitable for a wide range of peripheral circuits.
Features
D Speech circuit with anti-clipping D Tone-ringer interface with DC/DC converter D Speaker amplifier with anti-distortion D Power-supply management (regulated, unregulated) and a special supply for electret microphone D Voice switch D Interface for answering machine and cordless phone
Benefits
D No piezoelectric transducer for tone ringing necessary D Complete system integration of analog signal processing on one chip D Very few external components
Applications
Feature phone, answering machine, fax machine, speaker phone, cordless phone
Block Diagram
Speech circuit
Voice switch
Audio amplifier
Clock Data Reset
Serial bus DTMF Tone ringer
MCU
Ordering Information
Extended Type Number U4091BM-MFN U4091BM-MFNG3 Package SSO44 SSO44 Taped and reeled Remarks
Rev. A3, 27-Oct-00
1 (32)
Detailed Block Diagram
U4091BM
VL
2 (32)
2 TXACL 5 STBAL 4 43 44 1 39 42 38
AGATX
9
10
8 17 15
Power supply
16 12
3 V MIC
MICRO AGARX TXA
11 30 Offset canceler DTMF/ melody Filter Offset canceler MUX
MIC
Figure 1. Detailed block diagram
22
40
Ringing power converter
21 19 20 V RING
AGCO
AMPB
LRX
DTMF
ADC
AGC
AGCI AMREC
Switch matrix
EPO RXLS LTX LIDET VMP RFDO
41 7 6 18 REG POR
RA SACL SA 14 13 AFS control 35 34 37 36 33 31 32 BIDIR serial bus 24 25 23
DIV.
1/8/16/32
OSC.
3.58 MHz
26
27 29 28
Rev. A3, 27-Oct-00
C
V MP
RECO1
MICO
U4091BM
Pin Description
Pin 1 2 3 4 Symbol RECIN TXACL MIC3 MIC2 Function Receive amplifier input Time-constant adjustment for transmit anti-clipping Microphone input for hands-free operation Input of symmetrical microphone amplifier with high common-mode rejection ratio Input of symmetrical microphone amplifier with high common-mode rejection ratio Output of the receive amplifier Output of the receive amplifier, also used for sidetone network The internal equivalent inductance of the circuit is proportional to the value of the capacitor at this pin. A resistor connected to ground may be used to adjust the DC mask. Positive supply-voltage input to the device in speech mode Input for sensing the available line current Ground, reference point for DCand AC signals Unstabilized supply voltage for speech network Negative output of speaker amplifier (push-pull only) Positive output of speaker amplifier (single ended and push-pull operation) Unregulated supply voltage for the microcontroller (via series regulator to VMP) Regulated output voltage for supplying the microcontroller (typ. 3.3 V/ 6 mA in speech mode) Reference node for microphone amplifier, supply for electret microphones Time constant for speaker amplifier anti-clipping Pin 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Symbol VRING IMPA COSC Function Input for ringer supply Input for adjusting the ringer input impedance 70-kHz oscillator for ringing power converter
SWOUT Output for driving the external switch resistor INT SCL SDA OSCIN
OSCOUT
Interrupt line for serial bus Clock input for serial bus Data line for serial bus Input for 3.58-MHz oscillator Clock output for the microcontroller Reset output for the microcontroller Input for external supply indication Input of A/D converter Output of background-noise monitor receive Output of background-noise monitor transmit Time constant for mode switching of voice switch Time constant of receive-level detector Input of receive-level detector Input of transmit-level detector Time constant of transmit-level detector Switch for aditional line impedance Microphone preamplifier output Input for playback signal of answering machine
5
MIC1
6 7 8
RECO2 RECO1 IND
RESET ES ADIN BNMR BNMT CT TLDR INLDR INLDT TLDT IMPSW MICO AMPB
9 10 11 12 13 14
VL SENSE GND VB SAO2 SAO1
15
VMPS
16
VMP
AMREC Output for recording signal of answering machine STO STC STRC Output for connecting the sidetone network Input for sidetone network Input for sidetone network
17
VMIC
18
TSACL
Remark: The protection device at Pin RECIN is disconnected.
Rev. A3, 27-Oct-00
3 (32)
U4091BM
RECIN TXACL MIC3 MIC2 MIC1 RECO2 RECO1 IND VL SENSE GND VB SAO2 SAO1 VMPS VMP VMIC TSACL VRING IMPA COSC SWOUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Figure 2. Pinning
44 43 42 41 40 39 38 37 36 35 34 33 32
STRC STC STO AMREC AMPB MICO IMPSW TLDT INLDT INLDR TLDR CT BNMT
DC Line Interface and Supply-Voltage Generation
The DC line interface consists of an electronic inductance and a dual-port output stage which charges the capacitors at VMPS and VB. The value of the equivalent inductance is given by: L=2 RSENSE CIND (RDC R30) / (RDC + R30)
The U4091BM contains two identical series regulators which provide a supply voltage VMP of 3.3 V suitable for a microprocessor. In speech mode, both regulators are active because VMPS and VB are charged simultaneously by the DC line interface. The output current is 6 mA. The capacitor at VMPS is used to provide the microcomputer with sufficient power during long line interruptions. Thus, long flash pulses can be bridged or an LCD display can be turned on for more than 2 seconds after going on-hook. When the system is in ringing mode, VB is charged by the on-chip ringing power converter. In this mode, only one regulator is used to supply VMP with maximum 3 mA.
Supply Structure of the Chip
A main benefit of the U4091BM is the easy implementation of various applications due to the flexible system structure of the chip. Possible applications: D Group listening phone D Hands-free phone D Phones which feature ringing with the built-in speaker amplifier D Answering machine with external supply The special supply topology for the various functional blocks is illustrated in figure 3. There are four major supply states: 1. 2. 3. 4. Speech condition Power down (pulse dialing) Ringing External supply
31 BNMR 30 ADIN 29 ES 28 RESET
27 OSCOUT 26 OSCIN 25 SDA 24 23 SCL INT
1. In speech condition, the system is supplied by the line current. If the LIDET-block detects a line voltage above approximately 2 V, the internal signal VLON is activated. This is detected via the serial bus, all the blocks which are needed have to be switched on via the serial bus.
4 (32)
Rev. A3, 27-Oct-00
U4091BM
For line voltages below 2 V, the switches remain in quiescent state as shown in the diagram. 2. When the chip is in power-down mode (Bit LOMAKE), e.g., during pulse dialing, all internal blocks are disabled via the serial bus. In this condition, the voltage regulators and their internal bandgap are the only active blocks. 3. During ringing, the supply for the system is fed into VB via the Ringing Power Converter (RPC). Normally, the speaker amplifier in single-ended mode is used for ringing. The frequency for the melody is generated by the DTMF/Melody generator. 4. In an answering machine, the chip is powered by an external supply via Pin VB. The answering machine connections can be directly put to U4091BM. The answering machine is connected to the Pin AMREC. For the output AMREC, an AGC function is selectable via the serial bus. The output of the answering machine will be connected to the Pin AMPB, which is directly connected to the switching matrix, and thus enables the signal to be switched to every desired output.
Ringing Frequency Detector (RFD)
The U4091BM provides an output signal for the microcontroller. This output signal is always double the value of the input signal (ringing frequency). It is generated by a current comparator with hysteresis. The levels for the on-threshold are programmable in 16 steps; the off-level is fixed. Every change of the comparator output generates a high level at the interrupt output INT. The information can then be read out by means of a serial bus with either normal or fast read mode. The block RFD is always enabled.
VL RSENSE 10 C 1 F IND R + - R 300 k V 220F - + + - 3.3 V VMP 47 F VB 5.5 V VMPS 470F
5.5 V
Figure 3. Supply generator
Ringing Power Converter (RPC)
The RPC transforms the input power at VRING (high voltage/ low current) into an equivalent output power at VB (low voltage/ high current) which is capable of driving the low-ohmic loudspeaker. The input impedance at VRING is adjustable from 3 k to 12 k by RIMPA (ZRING = RIMPA / 100) and the efficiency of the stepdown converter is approximately 65%.
Rev. A3, 27-Oct-00
AAAAAAAAAAAAAAAA A AAAAAAAAA AAAAAAAAA A A AAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAA AAAAAAAA
0 7V 1V 15 22 V step
RINGTH[0:3]
VRING
Clock Output Divider Adjustment
The Pin OSCOUT is a clock output which is derived from the crystal oscillator. It can be used to drive a microcontroller or another remote component and thereby reduces the number of crystals required. The oscillator frequency can be divided by 1, 8, 16, 32. During power-on reset, the divider will be reset to 1 until it is changed by setting the serial bus. CLK[0:1] 0 1 2 3 Divider 1 8 Frequency 3.58 MHz 447 kHz 224 kHz 112 kHz
AAAAAA A A AAAAAAAAAAAAAAAA A A AAAAAA A A AAAAAAAAAAAAAAAA AAAAAAAAAAA A AAAAAA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A AAAAAA A A AAAAAAAAAAAAAAAA AAAAAAAAAAA AAAAAA
16 32
Serial Bus Interface
The circuit is controlled by an external microcontroller through the serial bus.
The serial bus is a bi-directional system consisting of a one-directional clock line (SCL) which is always driven by the microcontroller, and a bi-directional data-signal line. It is driven by the microcontroller as well as from the U4091BM (see figure 23). The serial bus requires external pull-up resistors as only pull-down transistors (Pin SDA) are integrated. WRITE: The data is a 12-bit word: A0 - A3: address of the destination register (0 to 15) D0 - D7: content of the register The data line must be stable when the clock is high. Data must be shifted serially. After 12 clock periods, the write indication is sent. Then, the transfer to the destination register is (internally) generated by a strobe signal transition of the data line when the clock is high. 5 (32)
U4091BM
AAAAAAAAAAAAAAAA AAA AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AAA AAA AAA A AAA AAA AAA A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA A A AAA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAA AA AAAAAAAAAAAAAAAA A A AA A A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA AAA A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA A AA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AA AAA A AA A A A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AA A A AA AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAA A A AA A A AA AAAA AAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A AAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A A A AA A A AAA A AA A A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAA A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A AAA A AA A A A A AA AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAA A A AA A A AAA A AA A A AAAA AAAAAAAA AA A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AAA A AA A A A A AA A A AAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAA A AA A A AAAAA AA A A AAAAA AAAAAAAAAAAAAAAA AA AA A A A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAA A AAAAAAAAAAAAAAAA AAAAAAAAAAAA A
0 1 2 3 00 01 10 11 1209 1336 1477 1633 -0.110 0.123 -0.020 -0.182
READ: There is a normal and a fast-read cycle. In the normal read cycle, the microcontroller sends a 4-bit address followed by the read indicator, then an 8-bit word is read out. The U4091BM drives the data line. The fast read cycle is indicated by a strobe signal. With the following two clocks the U4091BM reads out the status bits RFDO and LIDET which indicate that a ringing signal or a line signal is present (see figures 4, 5 and 6).
DTMFF[2:3] in DTMF Mode
Frequency
Error / %
DTMF Dialing
The DTMF generator sends a multi-frequency signal through the matrix to the line. The signal is the result of the sum of two frequencies and is internally filtered. The frequencies are chosen from a low and a high frequency group. The circuit conforms to the CEPT recommendation concerning DTMF option. Two different levels for the low level group and two different pre-emphasis (2.5 dB and 3.5 dB) can be chosen by means of the serial bus (rec. T/CF 46-03).
DTMFF [0:4]
f Hz
ToneName
Error/%
DTMF
Key
0 1 2 3 4 6 7 8 9
00000 00001 00010 00100
440.0 466.2 493.9 523.2 554.4 622.3 659.3 698.5 740.0 784.0 830.0 880.0 932.3 987.8
a1
-0.008 -0.016 -0.003 0.014 0.018
697 770 852 941 697 852 941 697 770 852 941 697 770 852 941 697 852 941 697 770 852 941 697 770 852 941 697 770 852 941
1209 1209 1209 1209 1336 1336 1336 1477 1477 1477 1477 1633 1633 1633 1633 1209 1209 1209 1336 1336 1336 1336 1477 1477 1477 1477 1633 1633 1633 1633
1 4 7 * 2 5 8 0 3 6 9 #
b1 h1 c2
00011
des2 d2 e2 f2 es2
5AAA 587.3 00101 00110 00111
-0.023AA 1336 770 -0.129 0.106 -0.216 -0.222 0.126 0.288 -0.169 -0.014 -0.004 -0.335 -0.355 -0.129 0.106 -0.214 -0.222 0.126 -0.241 -0.302 -0.014 0.665 0.367 0.387 0.771 --- ---
Melody - Confidence Tone Generation
01000 01001 01010
Melody/confidence tone frequencies are given in the table below. The frequencies are provided at the DTMF input of the switch matrix. A sinus wave, a square wave or a pulsed wave can be selected by the serial bus. Square signal means the output is half of frequency cycle high and half low. Pulsed signal means between the high and low phases are high impedance phases of 1/6 of the period. 0 1 2 3 4 5 6 7 DTMFM[0:2] 000 001 010 011 100 101 110 111 DTMF generator OFF Confidence tone melody on (sinus) Ringer melody (pulse) Ringer melody (square signal) DTMF (high level) DTMF (low level)
ges2 g2 a2 as2 b2 h2 c3
10 12 13 14 15 16 18 19 20 21 22 23 24 25 26 27 28 30 31
11
01011 01100 01101 01110 01111
A B C 1 4 7 * 2 5 8 0 3 6 9 #
1046.5 1108.7
D
10000 10010 10100 10101
des3 d3 e3 f3 es3
17AAA 1174.7 10001 10011
-0.023AA 1209 770
1244.5 1318.5 1396.9 1480.0 1568.0 1661.2 1760.0 1864.6 1975.5 2093.0 2217.5 2663.3 2983.0
ges3 g3 a3 as3 b3 h3 c4
10110 10111 11000 11001 11010 11011 11100
DTMFF[0:1] in DTMF Mode 00 01 10 11
Frequency
Error / %
des4 d4
A B C
29AAA 2349.3 11101 11110 11111
0 1 2 3
697 770 852 941
-0.007 -0.156 0.032 0.316
D
6 (32)
Rev. A3, 27-Oct-00
U4091BM
DTMFF4 in DTMF mode Pre-Emphasis Selection
AAAAAAAA A AAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAA AAAAAAAAA
0 1 2.5 dB 3.5 dB Write cycle
CLOCK DATA D7 D6 D5 D4 D3 D2 D1 D0 A3 A2 A1 A0 R/W=0 Strobe fromP Figure 4. Write cycle Data fromP
Normal read cycle
CLOCK
DATA
A3
A2
A1
A0
R/W=1 Strobe fromP
D7
D6
D5
D4
D3
D2
D1
D0
Data fromP
Data from U4091BM
Figure 5. Normal read cycle
Fast read cycle
CLOCK
DATA Strobe from P
D7=IZC D6=IVE
Data from U4091BM
Figure 6. Fast read cycle
Rev. A3, 27-Oct-00
7 (32)
U4091BM
Table 1. Names and functions of the serial bus registers Register R0 Group Enables R0B0 R0B1 R0B2 R0B3 R0B4 R0B5 R0B6 R0B7 R1 Enables R1B0 R1B1 R1B2 R1B3 R1B4 R1B5 R1B6 R1B7 R2 Matrix R2B0 R2B1 R2B2 R2B3 R2B4 R2B5 R2B6 R2B7 R3 Matrix R3B0 R3B1 R3B2 R3B3 R3B4 R3B5 R3B6 R3B7 R4 Matrix R4B0 R4B1 R4B2 R4B3 R4B4 R4B5 R4B6 R4B7 No Name ENRING ERX ETX ENVM ENMIC ENSTBAL MUTE ENRLT ENSACL ENSA ENSAO ENAM ENAGC free free FOFFC I1O1 I1O2 I1O3 I1O4 I1O5 I2O1 I2O2 I2O3 I2O4 I2O5 I3O1 I3O2 I3O3 I3O4 I3O5 I4O1 I4O2 I4O3 I4O4 I4O5 I5O1 I5O2 I5O3 I5O4 Speed up offset canceller Switch on MIC / LTX Switch on MIC / SA Switch on MIC / EPO Switch on MIC / AMREC Switch on MIC / AGCI Switch on DTMF / LTX Switch on DTMF / SA Switch on DTMF / EPO Switch on DTMF / AMREC Switch on DTMF / AGCI Switch on LRX / LTX Switch on LRX / SA Switch on LRX / EPO Switch on LRX / AMREC Switch on LRX / AGCI Switch on AMPB / LTX Switch on AMPB / SA Switch on AMPB / EPO Switch on AMPB / AMREC Switch on AMPB / AGCI Switch on AGCO / LTX Switch on AGCO / SA Switch on AGCO / EPO Switch on AGCO / AMREC Enable ringer Enable receive part Enable transmit part Enable VM-generator Enable microphone Enable sidetone Muting earpiece amplifier Enable POR low threshold Enable anti-clipping for speaker amplifier Enable speaker amplifier and AFS Enable output stage speaker amplifier Enable answering machine connections Enable AGC for answering machine 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 Description Status 1
8 (32)
Rev. A3, 27-Oct-00
U4091BM
Register R5 Group AGATX MICLIM R5B0 R5B1 R5B2 R5B3 R5B4 R5B5 R5B6 R5B7 R6 Shut down Sidetone R6B0 R6B1 R6B2 R6B3 R6B4 R6B5 R6B6 R6B7 R7 Sidetone AGARX R7B0 R7B1 R7B2 R7B3 R7B4 R7B5 R7B6 R7B7 R8 EARA Line imp. R8B0 R8B1 R8B2 R8B3 R8B4 R8B5 R8B6 R8B7 R9 AFS R9B0 R9B1 R9B2 R9B3 R9B4 R9B5 R9B6 R9B7 No Name EAFS AGATX0 AGATX1 AGATX2 MICHF DBM5 MIC0 MIC1 SD free SL0 SL1 LF0 LF1 LF2 LF3 P0 P1 P2 P3 P4 AGARX0 AGARX1 AGARX2 EA0 EA1 EA2 EA3 EA4 IMPH LOMAKE AIMP AFS0 AFS1 AFS2 AFS3 AFS4 AFS5 AFS4PS free Slope adjustment for sidetone LSB Slope adjustment for sidetone MSB Low frequency adjustment for sidetone LSB Low frequency adjustment for sidetone Low frequency adjustment for sidetone Low frequency adjustment for sidetone MSB Pole adjustment for sidetone LSB Pole adjustment for sidetone Pole adjustment for sidetone Pole adjustment for sidetone Pole adjustment for sidetone MSB Gain receive AGC LSB Gain receive AGC Gain receive AGC MSB Gain earpiece amplifier LSB Gain earpiece amplifier Gain earpiece amplifier Gain earpiece amplifier Gain earpiece amplifier MSB Line impedance selection (1 = 1 k) Short circuit during pulse dialing Switch for additional external line impedance AFS gain adjustment LSB AFS gain adjustment AFS gain adjustment AFS gain adjustment AFS gain adjustment AFS gain adjustment MSB Enable 4-point sensing Enable AFS block Gain transmit AGA LSB Gain transmit AGA Gain transmit AGA MSB Select RF-microphone input Max. transmit level for anti-clipping Gain microphone amplifier LSB Gain microphone amplifier MSB Shut down Description Status 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Rev. A3, 27-Oct-00
9 (32)
U4091BM
Register R10 SA Group No R10B0 R10B1 R10B2 R10B3 R10B4 R10B5 R10B6 R10B7 R11 ADC R11B0 R11B1 R11B2 R11B3 R11B4 R11B5 R11B6 R11B7 R12 DTMF R12B0 R12B1 R12B2 R12B3 R12B4 R12B5 R12B6 R12B7 R13 CLK RTH TM R13B0 R13B1 R13B2 R13B3 R13B4 R13B5 R13B6 R13B7 R14 TM CLOR R14B0 R14B1 R14B2 R14B3 R14B4 R14B5 R14B6 R14B7 Name SA0 SA1 SA2 SA3 SA4 SE LSCUR0 LSCUR1 ADC0 ADC1 ADC2 ADC3 NWT SOC ADCR MSKIT DTMFF0 DTMFF1 DTMFF2 DTMFF3 DTMFF4 DTMFM0 DTMFM1 DTMFM2 CLK0 CLK1 RTH0 RTH1 RTH2 RTH3 TME0 TME1 TME2 TME3 free CLOR0 CLOR1 CLOR2 CLOR3 CLOR4 Adjustment for calculated receive log amp LSB Adjustment for calculated receive log amp Adjustment for calculated receive log amp Adjustment for calculated receive log amp Adjustment for calculated receive log amp MSB Description Gain speaker amplifier LSB Gain speaker amplifier Gain speaker amplifier Gain speaker amplifier Gain speaker amplifier MSB Speaker amplifier single-ended mode Speaker amplifier charge-current adjustment LSB Speaker amplifier charge-current adjustment MSB Input selection ADC Input selection ADC Input selection ADC Input selection ADC Network tuning Start of ADC conversion Selection of ADC range Mask for interrupt bits DTMF frequency selection DTMF frequency selection DTMF frequency selection DTMF frequency selection DTMF frequency selection Generator mode selection Generator mode selection Generator mode selection Selection clock frequency for C Selection clock frequency for C Ringer threshold adjustment LSB Ringer threshold adjustment Ringer threshold adjustment Ringer threshold adjustment MSB Test mode enable (low active) Test mode enable (high active) Test mode enable (high active) Test mode enable (low active) Status 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
10 (32)
Rev. A3, 27-Oct-00
U4091BM
Register R15 Group CLOT No R15B0 R15B1 R15B2 R15B3 R15B4 R15B5 R15B6 R15B7 free free free CLOT0 CLOT1 CLOT2 CLOT3 CLOT4 Adjustment for calculated transmit log amp LSB Adjustment for calculated transmit log amp Adjustment for calculated transmit log amp Adjustment for calculated transmit log amp Adjustment for calculated transmit log amp MSB Name Description Status 0 0 0 0 0 0 0 0
Power-on Reset
To avoid undefined states of the system when it is powered on, an internal reset clears the internal registers. The system (U4091BM + microcontroller) is woken up by any of the following conditions: VMP > 2.75 V and VB > 2.95 V and or or line voltage (VL) ringer (VRING) external supply (ES)
The power-down of the circuit is caused by a shut-down sent by the serial bus (SD = 1), low-voltage reset or by the watchdog function (see figures 8, 9 and 10).
Watchdog Function
To avoid the system operating the microcontroller in a wrong condition, the circuit provides a watchdog function. The watchdog has to be retriggered every second by triggering the serial bus (sending information to the IC or other remoted components at the serial bus). If there has been no bus transmission for more than one second, the watchdog initiates a reset. The watchdog provides a reset for the external C, but does not change the U4091BM's registers.
Rev. A3, 27-Oct-00
11 (32)
U4091BM
Acoustic Feedback Suppression
Acoustical feedback from the loudspeaker to the handsfree microphone may cause instability of the system. The U4091BM has a very efficient feedback-suppression circuit which offers a 4-point- or alternatively a 2-pointsignal-sensing topology (see figure 7). Two attenuators (TXA and SAI) reduce the critical loop gain via the serial bus either in the transmit or in the receive path. The overall loop gain remains constant under all operating conditions. The LOGs produce a logarithmically-compressed signal of the TX- and RX-envelope curve. The block AFSCON determines whether the TX or the RX signal has to be attenuated. The voice-switch topology can be selected by the serial bus. In 2-point-sensing mode, AFSCON is controlled directly by the LOG outputs.
MICRO TXA MICO
AGATX
STO CTU RTU TLDT INLDT LOG LOG CALCT BNMT CTLO CBNMT
BNM Mode control BNM Line
AGARX LOG CALCR CT CCT AFSCON SA SAI DTD RECO2 BNMR TLDR RRU CBNMR CRLO CRU RECO1 HV LOG INLDR
Figure 7. Basic system configurations.
12 (32)
Rev. A3, 27-Oct-00
U4091BM
Line LID IVDD OSCOUT ton
VMP Reset trt trt - ton = 4.5 ms ton = start-up oscillator Figure 8. Power-on reset (line)
VRING VB IVDD VMP OSCOUT Reset ton trt Figure 9. Power-on reset (ringing)
Line LID VMP LVI LVR
LVI Reset OSCOUT Figure 10. Power-on reset (low voltage reset)
Rev. A3, 27-Oct-00
13 (32)
U4091BM
Dial-Tone Detector
The dial-tone detector is a comparator with one side connected to the speaker amplifier input and the other to VM with a 35-mV offset (see figure 11). If the circuit is in idle mode, and the incoming signal is greater than 35 mV (25 mVrms), the comparator's output will change disabling the receive idle mode. This circuit prevents the dial tone (which would be considered as continuous noise) from fading away as the circuit would have the tendency to switch to idle mode. By disabling the receive idle mode, the dial tone remains at the normally expected full level. D The output of the receive log (LOGR) - designated I2 D The output of the transmit background-noise monitor (BNMT) - designated I3 D The output of the receive background-noise monitor (BNMR) - designated I4 D The output of the dial-tone detector The differential output (AFST, AFSR) of the block MODECON controls AFSCON. The effect of I1-I4 is as follows:
Background-Noise Monitors
This circuit distinguishes speech (which consists of bursts) from background noise (a relatively constant signal level). There are two background-noise monitors * one for the receive path and the other for the transmit path. The receive background-noise monitor is operated on by the receive level detector, while the transmit background noise monitor is operated on by the transmit level detector (see figure 12). They monitor the background noise by storing a DC voltage representative of the respective noise levels in capacitors at CBNMR and CBNMT. The voltages at these pins have slow rise times (determined by the internal current source and an external C), but fast decay times. If the signal at TLDR (or TLDT) changes slowly, the voltage at BNMR (or BNMT) will remain more positive than the voltage at the noninverting input of the monitor's output comparator. When speech is present, the voltage at the non-inverting input of the comparator will rise quicker than the voltage at the inverting input (due to the burst characteristic of speech), causing its output to change. This output is sensed by the mode-control block.
4-Point Sensing
In 4-point sensing mode, the receive- and the transmitsensing path include additional CLOGs (Calculated Logarithmical amplifier). The block MODECON compares the detector output signals and decides whether receive-, transmit- or idle mode has to be activated. Depending on the mode decision, MODECON generates a differential voltage to control AFSCON. The MODECON block has seven inputs: D The output of the transmit log (LOGT) the comparison of LOGT, CLOGR D The output of the receive clog (CLOGR) - designated I1 D The output of the transmit clog (CLOGT) the comparison of CLOGT, LOGR 14 (32)
AAAAAA A AAAAAA A A A AAAAAAAAAAAAAAAA AA A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAA AAAAAA A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAA AAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAA AA A A AAAAAA A A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A A AAAAAAAAAAA AAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAA AA A A AAAAAA A A A AAAAAAAAAAAAAAAA AA A A AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAA AAA AAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAA AAA
I1 T T I2 T T T T R R R I3 S Y Y X N N N I4 X Y Y S X N N Mode Transmit Change mode Change mode Receive Idle Idle Idle R R T T R R R X N Idle X = don't care; Y = I3 and I4 are not both noise. LOGT > CLOGR LOGT < CLOGR LOGR < CLOGT LOGR > CLOGT BNMT detects speech BNMT detects noise BNMR detects speech BNMR detects noise I1=T I1=R I2=T I2=R I3=S I3=N I4=S I4=N
Inputs
Output
Term Definitions
1. `Transmit' means the transmit attenuator is fully on, and the receive attenuator is at maximum attenuation. 2. `Receive' means the receive attenuator is fully on, and the transmit attenuator is at maximum attenuation. 3. In `Idle' mode, the transmit- and receive attenuator are at the half of their maximum attenuation. a) `Change mode' means both transmit and receive speech are present in approximately equal levels. The attenuators are quickly switched (30 ms) to the opposite mode until one speech level dominates the other. b) `Idle' means speech has ceased in both transmit and receive paths. The attenuators are then slowly switched (1.5 seconds) to idle mode. 4. Switching to the full transmit or receive modes from idle mode is at the fast rate (30 ms). Rev. A3, 27-Oct-00
U4091BM
Summary of the Truth Table
1. The circuit will switch to transmit mode if a) Both transmit level detectors sense higher signal levels than the respective receive level detectors and b) The transmit background-noise monitor indicates the presence of speech. 2. The circuit will switch to receive mode if a) Both receive level detectors sense higher signal levels than the respective transmit level detectors, and b) The receive background-noise monitor indicates the presence of speech. 3. The circuit will switch to the reverse mode if the level detectors disagree on the relative strengths of the signal levels, and at least one of the backgroundnoise monitors indicates speech. 4. The circuit will switch to idle mode when a) Both talkers are quiet (no speech present), or b) When one talker's speech level is continuously overridden by noise at the other speaker's location. The time required to switch the circuit between transmit, receive and idle is determined by internal current sources and the capacitor at Pin CT. A diagram of the CT circuitry is shown in figure 13. It operates as follows: D CCT is typically 4.7 F. D To switch to transmit mode, ITX is turned on (IRX is off), charging the external capacitor to -240 mV below VM. (An internal clamp prevents further charging of the capacitor.)
TLDR (TLDT) + - 56 k 33 k VM - + - + 36 mV I4 (I3) V B BNMR (BNMT) 1 F
D To switch to receive mode, IRX is turned on (ITX is off), increasing the voltage on the capacitor to +240 mV with respect to VM. D To switch to reverse mode, the current sources ITX, IRX are turned off, and the current source IFI is switched on, discharging the capacitor to VM. D To switch to idle mode, the current sources ITX, IRX, IFI are turned off, and the current source ISI is charging the capacitor to VM.
IN
+ - 35 mV VM DTD
OUT I4 to mode control
Figure 11. Dial tone detector
Figure 12. Background noise monitor
CT C CT I RX 10A I TX 10A IFI I SI
AFS control
to attenuators
Control circuit
4 I 1-4
Dial tone det. V M V M
Figure 13. Generation of control voltage (CT) for mode switching
Rev. A3, 27-Oct-00
15 (32)
U4091BM
TXA MICRO LOG
AFS control
Line
LOG SA SAI
Figure 14. Block diagram hands-free mode U4091BM 2-point signal sensing
TXA MICRO LOGT CLOGT
BNMT
Mode control
BNMR
Line
CLOGR CT CCT AFS control SA SAI DTD
LOGR
Figure 15. Block diagram hands-free mode U4091BM 4-point signal sensing
16 (32)
Rev. A3, 27-Oct-00
U4091BM
Analog-to-Digital Converter ADC
This circuit is a 7-bit successive approximation analogto-digital converter in switched capacitor technique. An internal bandgap circuit generates a 1.25-V reference voltage which is the equivalent of 1 MSB. 1LSB = 19.5 mV. The possible input voltage at ADIN is 0 to 2.48 V. The ADC needs an SOC (Start Of Conversion) signal. In the `High' phase of the SOC signal, the ADC is reset. 50 s after the beginning of the `Low' phase of the SOC signal, the ADC generates an EOC (End Of Conversion) signal which indicates that the conversion is finished. The rising edge of EOC generates an interrupt at the INT output. The result can be read out by the serial bus. Voltages higher than 2.45 V have to be divided. The signal which is connected to the ADC is determined by 5 bits: ADC0, ADC1, ADC2, ADC3 and NWT. TLDR/TLDT measuring is possible relative to a preceding reference measurement. The current range of IL can be doubled by ADCR. If ADCR is `High', S has the value 0.5, otherwise S = 1. The source impedance at ADIN must be lower than 250 k. Accuracy: 1 LSB + 3%
Table 2 Input selection AD converter SOC 50 s EOC Figure 16. Timing of ADC IL 20mV/(1mA S) ADIN 0.4 VB 0.4 VMPS 0.75 VMP 8 (TLDR-REF) 8 (TLDT-REF) 0.4 SAO1 0.4 OFF1 0.4 OFF2 0.4 OFF3 EOC MSB BIT5 BIT4 SOC
ADC
BIT3 BIT2 BIT1 LSB
Figure 17. ADC input selection
AAAAAAAAAAAAA A A A AAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAA A
0 1 2 3 4 5 6 7 8 9 00000 00001 00010 00011 00100 00101 00110 00111 OFF IL I1 = S 127 mA D / 127 ADIN extern VB VMPS VMP TLDR TLDT free SAO1 V2 = 2.5 V D / 127 (max. 2.5 V) D / 127 D / 127 V3 = (2.5 V / 0.4) V4 = (2.5 V / 0.4) V6 = 8 V7 = 8 V5 = (2.5 V / 0.75) D / 127 (Vp - Ref) (Vp - Ref) D / 127 D / 127 01000 01001 01010 01011 01100 01101 01110 01111 V4 = (2.5 V / 0.4) D / 127 10 11 12 13 14 15 Offcan1 Offcan2 Offcan3 free free free Atmel Wireless & Microcontrollers internal use 16-31 1XXXX NWT (TLDR) D = measured digital word (0 < = D < = 127) S = programmable gain 0.5 or 1 Vp = peak value of the measured signal Rev. A3, 27-Oct-00 17 (32)
ADC[1:4]
Value
U4091BM
Switch Matrix
AGCO
AMPB LRX DTMF MIC Offset canceller Offset canceller I1
I5
I4
I3
I2
AGC
Lowpass O5 O4 O3 O2 O1 2.9 dB LTX AMREC EPO RXLS AGATX0 AGATX1 AGATX2 TXO -10 dB STO Figure 18. Diagram for switch matrix
AGCI
18 (32)
AAAAAAAAAAAAAAAA AA A AAAAAAAAA A A A A AAAAAAAAA A A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAA A A AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAA A A AA A AAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAA A A AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AAAAAAAA AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAA A A AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAA A A AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAA A A AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AA A AA AAAAAAAAAAAAAAAA AAAAAAAA AAAAAAAAAAAAAAAA AAAAAAAA AA
R2 R2B0 R2B1 R2B2 R2B3 R2B4 R2B5 R2B6 R2B7 R3B0 R3B1 R3B2 R3B3 R3B4 R3B5 R3B6 R3B7 R4B0 R4B1 R4B2 R4B3 R4B4 R4B5 R4B6 R4B7 I1O1 I1O2 I1O3 I1O4 I1O5 I2O1 I2O2 I2O3 I2O4 I2O5 I3O1 I3O2 I3O3 I3O4 I3O5 I4O1 I4O2 I4O3 I4O4 I4O5 I5O1 I5O2 I5O3 I5O4 Switch on MIC / LTX Switch on MIC / RXLS Switch on MIC / EPO Switch on MIC / AMREC Switch on MIC / AGCI Switch on DTMF / LTX Switch on DTMF / RXLS Switch on DTMF / EPO R3 Switch on DTMF / AMREC Switch on DTMF / AGCI Switch on LRX / LTX Switch on LRX / RXLS Switch on LRX / EPO Switch on LRX / AMREC Switch on LRX / AGCI Switch on AMPB / LTX R4 Switch on AMPB / RXLS Switch on AMPB / EPO Switch on AMPB/ AMREC Switch on AMPB / AGCI Switch on AGCO / LTX Switch on AGCO / RXLS Switch on AGCO / EPO Switch on AGCO / AMREC Rev. A3, 27-Oct-00
The switch matrix has 5 inputs and 5 outputs. Every pair of input and output except AGCO and AGCIN can be connected. The inputs and outputs used must be enabled. If 2 or more inputs are switched to an output, the sum of the inputs is available at the output. The inputs MIC and LRX have offset cancellers with a 3-dB corner frequency of 270 Hz. AMPB has a 60-k input impedance. The TXO output has a digitallyprogrammable gain stage with a gain of 2, 3 to 9 dB depending on AGATX0 (LSB), AGATX1, AGATX2 (MSB) and a first order low-pass filter with 0.5 dB damping at 3300 Hz and 3 dB damping at 9450 Hz. The outputs RXLS, EPO and AMREC have a gain of 0 dB. The offset at the outputs of the matrix is less than 30 mV. If a switch is open, the path has a damping of more than 60 dB.
Table 3 Table of bits and corresponding switches Register No. Name Description
U4091BM
Sidetone System
LTX
8dB
LINE CK ZL
LRX
0-7dB
+ DIFF1 -
STO_DIFF
MOD
-10dB
RECIN STO
AGARX
AMP1
-10dB
9dB
AMP2
STOAMP
Sidetone balancing
LF STRC
STO 8.2 k
g
P
CTO 33 nF SL STC
f
LF
P
SL
Figure 19. Principle circuit of the sidetone balancing
The SideTone Balancing (STB) has the task of reducing the crosstalk from LTX (microphone) to LRX (earpiece) in the frequency range of 0.3 to 3.4 kHz. The LTX signal is converted into a current in the MOD block. This current is transformed into a voltage signal (LINE) by the line impedance ZL. The LINE signal is fed into the summing amplifier DIFF1 via capacitor CK and attenuator AMP1. On the other hand the LTX buffered by STOAMP drives an external lowpass filter (RST, CST). The external lowpass filter and the internal STB have the transfer function drawn in the STB box. The amplified STB-output signal drives the negative input of the summing block. If both signals at the DIFF1 block are equal in level and phase, we have good suppression of the LTX signal. In this condition, the frequency and phase response of the STB block will represent the frequency curve on line. In real life the line impedance ZL varies strongly for different users. To obtain good suppression with one application for all different line impendances, the STB function is programmable.
The 3 programmable parameters are: 1. LF (gain at low frequency) LF has 15 programming steps of 0.5 dB. LF(0) gives -2 dB gain, LF(15) gives 5.5 dB gain.
STO_DIFF(LF) = (-10 dB - 2 dB + 0.5 dB LF + 9 dB) LTX
2. P (the pole position of the lowpass) The P adjustment has 31 steps. P(0) means the lowpass determined by the external application (RST, CST). The internally processed lowpass frequency is fixed by this equation 1 f(P) + 1.122 P 2 Pi CST RST 3. SL (sidetone slope; the pole frequency of the highpass) The SL has 3 steps. SL(0) is a lower frequency of the highpass. SL(3) is a higher frequency of the highpass. With SL, can be influenced the suppression at high frequencies.
Rev. A3, 27-Oct-00
19 (32)
U4091BM
-10dB -3dB ... -10dB and 7dB (NWT)
Offset cancel
32dB -23dB
ST Sidetone balancing
7dB0dB and 20dB (NWT)
SAO1
6dB
Line
VL
Offset cancel
1dB steps
LRX
RXLS 1.5dB steps
Loud- speaker SAO2
26dB -3dB and -10dB (DTMF)
RECO1
Earpiece
DTMF < -34dBm/ -32dBm >
DTMF generator MIC1 Handset micro- phone MIC2 Intercom micro- phone Answering machine MIC3
0dB 6dB steps 0dB 30dB12dB
Filter
7dB -48dB
DTMF < -24dBm/ -22dBm >
DTMF
EPO 1dB steps 9dB2dB
Switching matrix
Offset cancel
MIC LTX
RECO2
VL
8dB 1dB steps MOD
Line
1dB steps
0dB
AMPB
AMREC
0dB
AMPB
AMREC Answering machine
0dB
AGCO
AGCI
0dB
AGC
Figure 20. Audio frequency signal management U4091BM
Absolute Maximum Ratings
Parameter Line current DC line voltage Symbol IL VL Tj Value 140 12 15 Unit mA V mA C C C W
AAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAA AA
Maximum input current Junction temperature Storage temperature Ambient temperature IRING Tamb Tstg Ptot 125 -25 to +75 0.9 -55 to +150 Total power dissipation, Tamb = 60C
Thermal Resistance
Parameter Junction ambient SSO44 Symbol RthJA Value 70 Unit K/W
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA
20 (32) Rev. A3, 27-Oct-00
AA A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAA AAAAAAAAAAA A A AA A A A A AA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AAAA AAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAA AAAA AAAA A A AA A A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AAA A A A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA A A A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA A A A A A A A AA A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A A A AAA A A AA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAA A AAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAA AAAAA AAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAA
f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Rev. A3, 27-Oct-00
Electrical Characteristics
Transmission amplifier, IL = 14 mA, VMIC = 2 mV, MICG[0:1] = 2, AGATX[0:2] = 7 ERX = ETX = ENMIC = ENSTBAL = I1O1 = I3O3 = 1, (GT = 48 dB)
Anti-clipping: attack time release time
Noise at line psophometrically weighted
Maximum output voltage
Maximum output voltage
Maximum output voltage
Distortion at line
Gain difference between MIC1, MIC2 to MIC3
Input resistance of MIC3 amplifier
Input resistance of MIC amplifier
CMRR of microphone amplifier
Gain deviation
Gain change with current
Frequency response due to internal filters)
Transmit amplification
DC voltage drop-over cir- IL = 2 mA cuit IL = 14 mA IL = 60 mA IL = 100 mA
DC characteristics
Parameter
VMIC = 20 m MICG[0:1] = 3
IL 19 mA, d < 5% VMIC = 10 mV CTXA = 1 F DBM5 = 0
CTXA = 1 F each 3 dB overdrive
IL 14 mA, MICG[0:1] = 2 AGATX[0:2] = 7
DBM5 = 1
IL 14 mA VL = 700 mVrms
MICHF = 1
MICHF = 1
Tamb = -10 to +60C
IL = 14 to 100 mA
IL 14 mA, f = 1 kHz to 3.4 kHz
MICG[0:1] = 2 AGATX[0:2] = 7
Test Conditions / Pins
VMICOm
Symbol
CMRR
VLmax
VLmax
GT
GT
GT
GT
GT
VL
no
Ri
Ri
ax
dt
ta tr
Min.
45.3
4.8
1.8
8.6
4.4
75
60
-1
Typ.
- 73
-4.2
46.5
150AAAA k 300
6.0
3.0
1.6 4.8 7.2 9.2
50
80
2 80
U4091BM
Max.
0.4
0.5
0.5
- 70
47.7
6.6
4.2
9.8
5.2
2
0
dBmp
dBm
dBm
dBm
Unit
k
ms ms
dB
dB
dB
dB
dB
dB
%
V V V V
21 (32) Fig.
AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A A A A AA A A A A A A A AA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AAAAAAAAAAAAAAAAAAA A A A A AA A A AAAA AAAAAAAAA A AAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AA A A A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAA AAAAAA AAAAAAA AAAAAAAAAA A A A AA A A AAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA
f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Electrical Characteristics (continued)
U4091BM
22 (32) Output resistance Sidetone suppression Receiving noise psophometrically weighted Maximum output current d < 2% Output voltage d < 2% differential MUTE suppression IL = 14 mA, I101 = 0 (earpiece disconnect from matrix) Ear protection differential IL 14 mA, VGEN = 11 Vrms EA[0:4] = 21 Gain deviation Gain change with current Frequency response Receiving amplification Adjustment range of receiving gain Receiving amplifier IL = 14 mA, VGEN = 300 mV, ERX = ETX = ENMIC = ENSTBAL = I1O1 = I3O3 = 1, SL[0:1] = 0, LF[0:3] = 1, P[0:4] = 31, AFS[0:5] = 54, AGARX[0:2] = 0 Distortion at low operating current Gain at low operating current Parameter IL = 14 mA Zear = 68 nF + 100 EA[0:4] = 15 Zear = 100 EA[0:4] = 31 IL = 14 mA Zear = 68 nF + 100 EA[0:4] = 11 IL = 8 mA, IMP = 1 mA VMIC = 5 mV IVMIC = 300 A IL = 8 mA, IMP = 1 mA VMIC = 0.5 mV IVMIC = 300 A Each output against GND Z = 600 Tamb = -10 to +60C IL = 14 to 100 mA IL 14 mA, f = 1 kHz to 3.4 kHz Differential AGARX[0:2] = 0 EA[0:4] = 15 EA[0:4] = 31 Single ended, IL 14 mA, Mute = 1, EA[0:4] = 2 - 31 AGARX[0:2] = 0 - 7 Test Conditions / Pins Symbol GRF GR GR GR Iout GR GR GT Ro EP dt 0.775 Min. -19 20 60 -1 -1 15 45 4 Typ. - 79 0 16 Max. 0.5 0.5 - 76 +17 10 48 1 17 3 0 5
Rev. A3, 27-Oct-00 dBmp mAp Unit Vrms Vrms dB dB dB dB dB dB dB dB dB % Fig.
AA A AA A A A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAA A A A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A AA A AAA AA A A A A A A AA A AAAA AAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AAAA AA AA A AA A A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAA AAAA A A AAAAAAAAA AA A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AA A A A AA A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA
f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Rev. A3, 27-Oct-00 Gain deviation Gain change with current AC impedance Adjustment step: AGARX Adjustment step: earpiece amplifier Distortion at low operating current
Electrical Characteristics (continued)
Output voltage d < 2% differential
MUTE suppression IL = 14 mA, I101 = 0 (earpiece disconnect from matrix)
Ear protection differential IL 14 mA, VGEN = 11 Vrms EA[0:4] = 21
Frequency response
Receiving amplification
Adjustment range of receiving gain
Receiving amplifier IL = 14 mA, VGEN = 300 mV, ERX = ETX = ENMIC = ENSTBAL = I1O1 = I3O3 = 1, SL[0:1] = 0, LF[0:3] = 1, P[0:4] = 31, AFS[0:5] = 54, AGARX[0:2] = 0
Gain for DTMF signal
Gain at low operating current (receive only)
Parameter
IL = 14 mA Zear = 68 nF + 100 EA[0:4] = 11
IL = 6.5 mA, IMP = 1 mA IM = 300 , EA[0:4] = 15, ENMIC = ETX = I101 = 0
IL = 6.5 mA, IMP = 1 mA IM = 300 A VGEN = 200 mV EA[0:4] = 21, ENMIC = ETX = I101 = 0
Tamb = -10 to +60C
IL = 14 to 100 mA
IL 14 mA, f = 1 kHz to 3.4 kHz
Differential AGARX[0:2] = 0 EA[0:4] = 15 EA[0:4] = 31
Single ended, IL 14 mA, Mute = 1, EA[0:4] = 2 - 31 AGARX[0:2] = 0 - 7
IMPH = 0 IMPH = 1
AMPB RECO1/2 EA[0:4] = 1
AGARX[0:2] = 1
EA[0:4] = 1 for EA[0:4] = 2 ... 3
Test Conditions / Pins
Symbol
GRF
Zimpl Zimph
GR
GR
GR
GR
GR
GR
EP
dR
0.775
Min.
-19
595 980
0.8
0.8
60
-1
-1 15
-2
625 1030
Typ.
-10
0 16
1
1
0
U4091BM
Max.
655 1080
0.5
0.5
+17
1.2
1.2
1 17
3
0
5
2
Unit
Vrms
Vrms
dB
dB
dB
dB
dB dB
dB
dB
dB
dB
dB
%

23 (32) Fig.
AA A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Gain from AMPB to SAO VAMPB = 3 mV, IL = 15 mA, SA[0:4] = 31 SA[0:4] = 0 Minimum line current for operation Speaker amplifier, differential mode AMPB SAO1/2, ENSACL = ENSA = ENSAO = ENAM = I4O2 = 1, SA[0:4] = 31, ERX = ETX = ENMIC = ENSTBAL = I1O1 = I3O3 = 1 Pre-emphasis DTMF level at line (low gain) Max. level at line ENAM = I4O2 = 0 SE = 0, I3O2 = 1 IMP 1 mA, VGEN = 300 mV 600 , DTMFF4 = 0 DTMFF4 = 1 Sum level, 600 , DTMFM[0:2] = 5 Sum level, 600 , DTMFM[0:2] = 4 ILmin GSA -7.6 -5.1 36 2 3 37 -5.5 -6.1 -3.6 2.5 3.5 -4.6 -2.1 38 11 3 4 dBm dBm dBm dBm mA dB
AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA AAA A A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AA A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A AA A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AAAA AAAAAAA AAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAA AAAAAAAAAA AAA AAAAAAAAA AA A A AA A AAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A AA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A AAAA A A A A AA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA
f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Electrical Characteristics (continued)
U4091BM
24 (32)
DTMF, IL = 14 mA, ETX = I201 = 1, AGATX[0:2] = 7, DTMFM[0:2] = 4, DTMFF[0:4] = 0
AC impedance
Gain for DTMF signal
Adjustment step: AGARX
Adjustment step: earpiece amplifier
Distortion at low operating current
Gain at low operating current (receive only)
Output resistance
Sidetone suppression
Receiving noise psophometrically weighted
Maximum output current d < 2%
Parameter
IL = 6.5 mA, IMP = 1 mA IM = 300 , EA[0:4] = 15, ENMIC = ETX = I101 = 0
IL = 6.5 mA, IMP = 1 mA IM = 300 A VGEN = 200 mV EA[0:4] = 21, ENMIC = ETX = I101 = 0
IL = 14 mA Zear = 68 nF + 100 EA[0:4] = 15
Zear = 100 EA[0:4] = 31
IMPH = 0 IMPH = 1
AMPB RECO1/2 EA[0:4] = 1
AGARX[0:2] = 1
EA[0:4] = 1 for EA[0:4] = 2 ... 3
Each output against GND
Z = 600
Test Conditions / Pins
Symbol
Zimpl Zimph
Iout
GR
dR
Ro
Min.
595 980
0.8AAAA 1
0.8
-2
20
4
625 1030
Typ.
- 79
-10
1
0
Max.
655 1080
- 76
1.2
1.2
10
5
2
Rev. A3, 27-Oct-00 dBmp mAp Unit dB dB dB dB dB % Fig.
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAA A A A AAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A A AA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAA AAAA AA A A A AAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A A AAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AA A AAAA A A AA A A A A AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAA AAAAA AAAA A A AA A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA A A A A A A AA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA A A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A A A AA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A A A AA A A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A A A AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A A A AAA A A A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA A A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A A A AA A A A A AA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA
Rev. A3, 27-Oct-00 Gain MIC amp.: Gain MIC amp.: Discharge current Pin SAO2 Charge current Pin SAO2 Release time of anti-clipping Attack time of anti-clipping Gain change with frequency Gain change with current Mute suppression Gain deviation f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Electrical Characteristics (continued)
Gain MIC amp.: MIC1/2 AMREC
Microphone amplifier, VB = 5 V, VMIC = 2 mV, VMIC3 = 2 mV, ENMIC = ENAM = I1O4 = 1, MICHF = 0
Adjustment step of discharge current
Adjustment step of charge current
Output noise (input AMPB open) psophometrically weighted
Max. output power differential
Output power single ended
Adjustment step speaker amplifier
Parameter
Load resistance: RLS = 50 , d < 5% VAMPB = 40 mV, SE = 1 IL = 15 mA IL = 20 mA
MICG[0:1] = 2
MICG[0:1] = 1
MICG[0:1] = 0
ENSAO = 0, SE = 0 LSCUR[0:1] = 3
ENSAO = 0, SE = 1 LSCUR[0:1] = 3
ENSAO = 0, SE = 0 LSCUR[0:1] = 1
ENSAO = 0, SE = 1 LSCUR[0:1] = 1
20 dB over drive
IL = 15 mA f = 1 kHz to 3.4 kHz
IL = 15 to 100 mA
IL = 15 mA, VL = 0 dBm, VAMPB = 4 mV I4O2 = 0
IL = 15 mA Tamb = -10 to +60C
IL > 15 mA
Load resistance: RL = 50 , d < 5% VAMPB = 60 mV, SE = 0 VB = 5 V
SA[0:4] = -1
Test Conditions / Pins
Symbol
VSAO
GSA
GSA
GSA
ICHA
IDIS
PSA
PSA PSA
nSA
tf
tr
329.1
-1.45
Min.
-480
23.2
17.4
0.95
1.15
320
-1
3
-400
Typ.
29.6
23.7
17.9
-1.2
1.35
400
170
150
1.2
7 20
2
U4091BM
-0.95
Max.
-320
30.1
24.2
18.4
1.45
1.55
480
-56
240
1
0
1
mVpsoph
dBm
Unit
mW
mW mW
mA
mA
A
A
dB
dB
dB
ms
ms
dB
dB
dB
dB
25 (32) Fig.
A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA A A A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A AAAA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAA AAA A A A A A AAAAAAAAAAAAAA AAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA A A A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAA A AAA A A A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AA A AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAA A A A A AA A A A A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A
f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Electrical Characteristics (continued)
U4091BM
26 (32) Offset
Low-voltage interrupt VL = 0, VMP = 3.3 V, VB = 0 V
Power-on reset by ES VMP high, VB threshold
Power-on reset by ES VB high, VMP threshold
Power-on reset VL = 0, VMP = 3.3 V, VB = 5 V, U4091 in power-down mode
Mute switching matrix
Max. output level AMREC
Max. input level AMPB
Gain AMPB AMREC
Input impedance AMPB
Switching matrix, VL = 0, VB = 5 V, ENAM = I4O4 = 1, VAMPB = 0.6 Vrms
Release time
Attack time
Max. output level
Nominal gain
AGC for answering machine, AMPB AMREC, ENAM = ENAGC = I4O5 = I5O4 = 1
Settling time offset-cancellers in speed-up mode
Settling time offset-cancellers
MIC1/2 MIC3
Input suppression: MIC3 MIC1/2
MIC3 AMREC
Gain MIC amp.:
Parameter
VMP = 3 V, ES = 4 V, rise VB until RESET go to low
VB = 4 V, ES = 4 V, rise VMP until RESET go to low
I4O4 = 0
I4O4: 1 0
I4O4 = 1
I4O5 = I5O4 = 1, I4O4 = 0
20 dB overdrive
VAMPB = 50 mV, d< 5%
VAMPB = 5 mV
5 , FOFFC = 1
5 , FOFFC = 0
MICHF = 1
MICG[0:1] = 0, MICHF =0
MICHF = 1, MICG[0:1] =3
MICG[0:1] = 3
Test Conditions / Pins
Symbol
VAMR
VMPon
VBon
EC
Min.
2.65
-0.7
240
60
50
24
60
60
35
35
Typ.
2.75
-0.3
35.5
35.5
300
3.2
1.8
60
45
26
1
9
VB- 600 mV
Max.
2.85
36.0
36.0
30
600
360
0.1
2.4
70
28
12
Rev. A3, 27-Oct-00 mVp Unit VPP mV mV k dB dB ms ms dB ms ms dB dB dB dB V V Fig.
AA A AA A A A AA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AA A A A A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA A A A A A A A AA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAA A A A A A A AA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A AA AAA A A A A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAA AAAAAAAAAAAAAAAAAAAAAAAA A AAA AAAAAAA AAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A A AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAA
f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified.
Rev. A3, 27-Oct-00 VMPS VMP Max. current Pins SCL, SDA (input mode) Low-voltage reset VMP decreasing
Electrical Characteristics (continued)
Supply voltages, VMIC = 25 mV, Tamb = - 10 to + 60C
Attenuation of speaker amplifier
Attenuation of transmit gain
Adjustment range of attenuation
AFS (Acoustic Feedback Suppression), IL = 14 mA, VGEN = 300 mV, ERX = ETX = ENMIC = ENSTBAL = I1O1 = I3O3 = 1, SL[0:1] = 0, LF[0:3] = 1, P[0:4] = 31, AGARX[0:2] = 0
Resistance to GND
Switch-off leakage current
Switch for additional impedance (Pin IMPSW) VMP = 3.3 V, VB = 3 V
Pins INT, SDA (output mode)
Input leakage current
Output impedance at OSCOUT
Logical part VMP = 3.3 V, VB = 5 V
Difference voltage between low-voltage interrupt and reset
Power-off reset VL = 0, VMP = 3.3 V, VB = 0 V
Parameter
IL = 100 mA, RDC = inf., IMP = 0 mA
IL = 14 mA, RDC = 680 k IMP = 3 mA
IL 15 mA, IINLDT = 10 A IINLDR = 0 A
IL 15 mA, IINLDT = 0 A IINLDR = 10 A
IL 15 mA
IMPSW = 1
IMPSW = 1
0 < Vi < VMP IMPSW = 0
Output low (resistance to GND)
0 < Vi < VMP
Low level High level
VLVI - VLVR
Decrease VMP until RESET returns to low
Decrease VMP until INT returns to high
Test Conditions / Pins
Symbol
VLVR
VLVI
VMPS
VMP
GT
GSA
0.8 VMP
Min.
-0.5
2.35
150
100
3.1
0.6
2.5
47
47
-5
-1
0
Typ.
2.45AAAA 2.55
230
150
3.3
0.9
2.6
50
50
50
0.2 VMP
U4091BM
Max.
350
5.5
3.5
1.2
2.7
53
53
50
80
5
5
1
Unit
mA
mV
A
k
dB
dB
dB
V
V
A
V V
V
V
27 (32) Fig.
U4091BM
Electrical Characteristics (continued)
f = 1 kHz, 0 dBm = 775 mVrms, IVMIC = 0.3 mA, IMP = 3 mA, RDC = 1.3 M, Tamb = 25C, Zear = 68 nF + 100 , RLS = 50 , ZM = 68 nF, resonator: f = 3.58 MHz, all bits in reset condition, unless otherwise specified. Parameter Test Conditions / Pins Symbol VMIC VB Min. 1.5 Typ. Max. 4 Unit V V Fig.
AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAA A A A A A A A A A A AA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A A AAAAAAAAAAAAAAAAAAA A A AA A A AA A AA A A A A A AAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAA A A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AA A AAAA A A A A A AA A A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA
VMIC VB IL 14 mA, RDC = 1.3 M IM = 700 A IB = +20 mA, IL = 0 mA 5.5 15 6.3 Ringing power converter, IMP = 1 mA, IM = 0 Maximum output power RIMPA = 500 kW PSA VRING = 20.6 V ENSA = ENSAO = SE = 1 VRING: high to low low to high, RINGTH [0:3] = 0 mW Threshold Threshold Threshold 7.4 7.4 23 V V V V 6.0 19 6.7 21 1 low to high RINGTH [0:3] = 15 RINGTH = 1 VRING = 30 V Adjustment steps threshold Input impedance Max. input voltage 0.8 4.6 30 1.2 7.0 5.8 k V VRINGm
ax
Serial bus SCL, SDA, AS, VMP = 3.3 V, RSDA = RSCL = RINT = 12 kW Input voltage HIGH LOW Output voltage Acknowledge LOW Clock frequency Rise time SDA, SCL Fall time SDA, SCL Period of SCL HIGH LOW Setup time Start condition Data Stop condition Time space 1) Hold time Start condition DATA
1)
SDA, SCL, INT SDA ISDA = 3 mA SCL
ViBUS 3.0 0 VO fSCL tr tf VDD 1.5 0.4 100 1 300 4.0 4.7 4.7 250 4.7 4.7 4.0 0 V V V kHz s ns s s s ns s s s s
HIGH LOW
tH tL tsSTA tsDAT tsSTOP twSTA thSTA thDAT
This is a space of time where the bus must bee from data transmission and before a new transmission can be started
28 (32)
Rev. A3, 27-Oct-00
Rev. A3, 27-Oct-00
sin V V + V 3.58 MHz 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 V + + PWL PWL A
Test Circuits
Figure 21. Basic test circuit
U4091BM
1
2
3
4
5
6 V
7
8
9 10 C IND R CD
10
11
12
13
14
15
16
17
18
19
20
21
22
+
+
V 50 sin sin V V
U4091BM
V
29 (32)
U4091BM
30 (32)
PWL PWL 3.58 MHz + + 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23
Figure 22. Test circuit for ringing
U4091BM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 BC 556
22 2.2 mH
68 nF V 50 V VB
14600
SD103A
VB
Rev. A3, 27-Oct-00
U4091BM
Bus Timing
SDA
twSTA tr tf thSTA
SCL
P S thSTA tL thDAT tH tsSTA thDAT tsSTOP P P = Stop, S = Start
Figure 23. Bus timing diagram
Package Information
Package SSO44
Dimensions in mm
18.05 17.80 9.15 8.65 7.50 7.30
2.35 0.3 0.8 16.8 44 23 0.25 0.10
0.25 10.50 10.20
technical drawings according to DIN specifications 13040
1
22
Rev. A3, 27-Oct-00
31 (32)
U4091BM
Ozone Depleting Substances Policy Statement
It is the policy of Atmel Germany GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. Atmel Germany GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. Atmel Germany GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances.
4.5.
We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use Atmel Wireless & Microcontrollers products for any unintended or unauthorized application, the buyer shall indemnify Atmel Wireless & Microcontrollers against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. Data sheets can also be retrieved from the Internet: http://www.atmel-wm.com
Atmel Germany GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423
32 (32)
Rev. A3, 27-Oct-00

▲Up To Search▲

Price & Availability of U4091BMNBSP

	To Download U4091BMNBSP Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .