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Telephone Line Interface and Speakerphone Circuit
AS2522B
Key Features
-
DATA SHEET
General Description
AS2522 is a CMOS integrated circuit that incorporates DC and AC line adaptation (DC-mask and synthesized ACimpedance of 1000) as well as a speech circuit with softclipping, line loss compensation and Rx-volume control for handset and handsfree operation. It shall act as an a/bline powered device, which is controlled by a CPU via a serial interface. Furthermore the AS2522 incorporates a DTMF, FSK transmitter, single tone and ringer tone generator. AS2522 allows to use an off-the-shelf microprocessor without special blocks and functions for telephone applications. DTMF, FSK transmitter, single tone and ringer tone generator can be controlled via the serial interface as well as the gain settings in handset and handsfree mode.
Line/Speech circuit, DTMF dialer, FSK transmitter and tone ringer on a 32-pin CMOS-IC Enhanced voice switching Background noise monitoring DTMF tone generator FSK Transmitter V.23, BELL202, V.21, BELL 103 Ringer tone programmable Tx- and Rx-gain programmable Digital volume control of Rx signals DC characteristic programmable Dual softclipping in handset mode Tx-softclipping in handsfree mode Common monitor amplifier for loudhearing, handsfree and ringing Supply voltage generation for external circuitry Automatic line loss compensation (LLC) Real and complex impedance selectable by external components Side tone adaptation selectable by external components Unique EMC performance Operating range from 15mA to 100mA (down to 5mA with reduced performance) Few external components
Applications
Enhanced handsfree feature phones with CallerID and extended displays.
Package
Available in 32-pin TQFP
Block Diagram
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Data Sheet AS2522B
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Pin description
Pin # 13 Symbol LS Function
Line Current Sense Input
Analog input for sensing the line current
10
LI
Line Input
Analog input used for power extraction and line current sensing
11
RI
Receive Input
Analog input for ac-separated receive signal
7
STB
Side Tone Balance Input
Analog input for side tone cancellation network
8
CS
Current Shunt Control Output
N-channel open drain output to control the external high power shunt transistor for synthesizing AC- and DC-impedance, modulation of line voltage and shorting the line during make periods of pulse dialing
14
CI
Complex Impedance Input
Analog input pin for the capacitor to program a complex impedance
12
SS
Supply Source Control Output
N-channel open drain output to control the external high power source transistor for supplying (Vpp) the loudspeaker amplifier in off-hook loudspeaking/handsfree mode
9
VSS
Voltage Source Source
Negative Analog Power Supply
18
VDD
Voltage Drain Drain
Positive Analog Power Supply
19
AGND
Analog Ground
Special ground for the internal amplifiers
6
M1
Microphone Input 1
Differential input for the handset microphone (electret)
4
M2
Microphone Input 2
Differential input for the handset microphone (electret)
5
M3
Microphone Input 3
Differential input for the handsfree microphone (electret)
3
M4
Microphone Input 4
Differential input for the handsfree microphone (electret)
17
RO
Receive Output to Handset
Output for driving a dynamic earpiece with an impedance from 150 to 300
31
OSC
Oscillator Input
Input for ceramic resonator 3.58MHz.
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Data Sheet AS2522B
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Pin # 22 21
Symbol VPP CM
Function Loudspeaker Power Supply High power supply for the output driver stage
Converter Make Output
This is an output for controlling the external switching converter. During ringing it converts the ring signal into a 4V supply voltage
27
xCS
Chip Select
Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm )
29
DI
Data Input
Data input of the serial interface. Internal pull-up resistor ( 100kOhm )
30
CLK
Clock
Clock input of the serial interface. Internal pull-up resistor ( 100kOhm )
28
DO
Data Output
Data output of the serial interface. If xCS=1 DO is in HI-Z state
24 23 1 2 20 15 16 25 32
LO1 LO2 FT1 FT2 CBN RECI RECV VSSA VSSD
Loudspeaker Output 1 and 2
Output pins for a 50 loudspeaker Analog input pin for connecting a capacitor for offset cancellation. Analog input pin for connecting a capacitor for offset cancellation. Analog input pin for connecting a capacitor for background noise monitoring. Analog input for the handsfree receive path. Should be connected to RO via coupling capacitor. Analog input for receive voice switching path. Power supply pin for LS1-LS2 output amplifier.
Voltage Source Source Digital
Negative Digital Power Supply
26
VDDD
Voltage Drain Drain Digital
Positive Digital Power Supply
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Data Sheet AS2522B
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Detailed Block Diagram
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Data Sheet AS2522B
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limits the output voltage at RO to 1Vp. It prevents harsh distortion and acoustic shock. There is LLC for this path. The gain of the LS LO1/LO2 receive path is set to +29dB. This gain can be changed by programming from +22dB to -37dB in 1dB steps. The user can also change the gain via Register VOL (See section "Handsfree"). The receive input is the differential signal of RI and STB. The soft clip circuit limits the output voltage at LO1 of LO2 to 1Vp. It prevents harsh distortion and acoustic shock. There is optional LLC for this path.
Functional Description
DC conditions
The normal operating mode is from 15mA to 100mA. An operating mode with reduced performance is from 5mA to 15mA. In the line hold range from 0mA to 5mA the device is in a power down mode. The DC characteristic is determined by the voltage at LIpin and a 30 resistor between LI- and LS-pin. It can be calculated by the following equation: VLS = VLI + ILine * 30. VLI can be programmed to be 3.5V or 4.5V.
Line Loss Compensation
The line loss compensation is programmable (Register 0x0C). When it is activated, the transmit and receive gains for both I/O's are decreased by 6dB at line currents from 20mA to 50mA or from 45mA to 75mA.
2/4 wire conversion
AS2522 has a built-in dual Wheatstone bridge with one common ground. This provides a maximum of independence of AC-impedance and side tone from each other. One can adapt side tone without changing the ACimpedance.
Handsfree
The handsfree function allows voice communication without using the handset (full 2-way speaker phone). Two voice controlled attenuators prevent acoustic coupling between the loudspeaker and the microphone. The voice switching circuit has three states, namely idle, transmit or receive. In receive mode the attenuation of the receive path and the transmit path can be controlled by Register VOL between 0dB and -20dB. The following table shows how voice switching is controlled
AC-impedance
The AC-impedance of AS2522 is set to t.m. 1000. With the external capacitor at CI-pin it can be programmed complex. With an external resistor of approx. 1.5k connected to the LS-pin it can be programmed to 600.
Side Tone
A good side tone cancellation can be achieved by using the following equation: ZBAL/ZLINE = 10
Transmit path
The gain of the M1/M2 LS is set to +37dB. This gain can be changed by programming from +30dB to +45dB in 1dB steps (Register Txgain). The input is differential with an impedance of 10k. The soft clip circuit limits the output voltage at LS to 2Vp. There is LLC for this path. The gain of the M3/M4 LS is set to +46dB. This gain can be changed by programming from +39dB to +54dB in 1dB steps. The input is differential with an impedance of 10k. The soft clip circuit limits the output voltage at LS to 2Vp. There is no LLC for this path.
Receive path
The gain of the LS RO receive path is set to +1dB. This gain can be changed by programming from -6dB to +9dB in 1dB steps (Register Rxgain). The receive input is the differential signal of RI and STB. The soft clip circuit
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Data Sheet AS2522B
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voice switching circuit
TX_atten RX Voice switching speech Backgnd noise monitor
LINE +14dB +8dB +3dB
FT2
Gmax = +9dB Gmin = -21dB ... -40dB (VOL)
+23dB
Offset comp
Compress
Peak detector Voice switching
speech Peak detector Compress Offset comp
FT1 CBN
CTXoffset
RO
RECV
Offset comp
Compress
Peak detector
Cmicoffset CBckgnd
RECI
Gmax = -4dB ... +16dB (VOL) Gmin = -33dB
+12dB
Speech Rx > Tx_atten Tx_atten > Rx Tx_atten > Rx X NO YES
Mode Receive Idle Transmit
Rx-gain 0db to -20dB -25 -50dB
Tx-gain -50dB to -30dB -25 0dB
Remark adjustable with VOL-setting middle position independent of VOL-setting
IDLE-mode RX-mode
0dB
TX-mode
-10dB TX-gain
-20dB Vol max Vol default Vol min -25dB -30dB
-40dB
RX-gain
-50dB
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Data Sheet AS2522B
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Serial Interface
Registers
The settings of the AS2522 are stored in 16 registers. Each register has 4 bit data width. Writing data into the AS2522 also causes the sending of the AS2522 status information on Pin D0. This information consists of the DC-current information (from the Line Loss Compensation circuit) and the status of the power-on reset circuit to test if AS2522 has already powered up. D7 LLC5 D6 LLC4 D5 LLC3 D4 LLC2 D3 LLC1 D2 LLC0 D1 xPOR D0 POR
Power on reset information in Statusbits D1 and D0 D1 0 0 1 1 D0 0 1 0 1 AS2522 is in POR state AS2522 is active
DC-current information in Statusbits D7 - D2 D[7:2] 000000 000001 000011 000111 001111 011111 111111 LLC-bit LO <20mA 20-26mA 26-32mA 32-38mA 38-44mA 44-50mA >50mA LLC-bit HI <45mA 45-51mA 51-57mA 57-63mA 63-69mA 69-75mA >75mA
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Data Sheet AS2522B
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Timing
The data format for writing to a register has the following form:
xCS CLK
DI DO
A3
A2
A1
A0
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
Note:
The pins xCS,CLK,DI have internal pull-up resistors.
Parameter CLK Pulse width HIGH CLK Pulse width LOW xCS to first falling CLKedge setup time CLK to DOUT delay DIN to CLK setup time DIN to CLK hold time
t5 t1 t2 t3
Symbol t6 t5 t1 t2 t3 t4
t6 t4
MIN 100ns 100ns 50ns
TYP
MAX
50ns 50ns 50ns
xCS CLK
DIN DOUT
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Data Sheet AS2522B
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Serial interface Registers
The following table shows the content of the 16 control registers. For a detailed description of the commands see Application note AN522.
Default value after reset
Address
Data
Control registers AS2522A, AS2522B
AAAADDDD 32103210
0 0 0 0 0 0 0 Nop 1 DTMFpair No operation. W rite to this location to get AS2522-Satus inform ation without altering any other setting. Frequency select depending on Tone Generator mode DTMF-Generator mode: Single tone mode AS2522B ONLY AND FSK=1 (Addr 12): na 0000
HIGH Group c1 c0 fHigh 0 0 1209Hz 0 1 1336Hz 1 0 1477Hz 1 1 1633Hz
LOW-Group r1 r0 fLow 0 0 697Hz 0 1 770Hz 1 0 852Hz 1 1 941Hz
f4, c1
f3, c0
f2, r1
0
0
1
0 DTMFLevel
f0, r0
Data f[3:0] 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111
Frequency 0Hz 800Hz (ring) 1067Hz (ring) 1333Hz (ring) 1300Hz (V.23) 2100Hz (V.23) 1200Hz (Bell 202) 2200Hz (Bell 202) 980Hz (V.21) 1180Hz (V.21) 1070Hz (Bell 103) 1270Hz (Bell 103) 1650Hz (V.21) 1850Hz (V.21) 2025Hz (Bell 103) 2225Hz (Bell 103) 1100
DTMF-Level 13 steps, 1dB stepsize Data DTMF-level LOW GROUP at pin LS 0x0 -16dBm : : 0xC -4dBm DTMF-settings Tone: DTMF-signal path 0...OFF, 1...ON preemph: DTMF-preempahsis 0...2.2dB, 1...3.2dB CT1 CT0: @RO @LO1/LO2 0 0 -36dB -15dB DTMF-confidence level 0 1 -30dB -9dB rel. to pin LS 1 0 -24dB -3dB 1 1 -18dB +3dB Single Tone frequencies if FSK=0 (Addr. 12) and RING/Beep Volum e [4] frequ1 frequ0 V1 0 0 800Hz 0 0 1 1067Hz 0 1 0 1333Hz 1 1 1 1333Hz 1 Tone Generator m ode, single tone path V0: 0 1 0 1 RING volume -17.5dB -11.5dB -5.5dB 0dB
0
0
1
1
x
x
x
x
0101
preemph
Tone
CT1
0
1
0
0
x
x
x
CT0
x
0000
frequ1
frequ0
V1
0
1
0
1
x
x
x
V0
x
0000
0
1
1
0
x
x
x
x
BURS: Analog tone at RO 0...OFF, 1...ON BURL: Analog tone at LO1/LO2 0...OFF, 1...ON M1 M0: Tone generator mode select 00 Tone generator OFF 01 DTMF generator mode 10 Single tone Analog mode 11 Single tone Digital mode ( RING ) Softclip-settings, Noise m onitoring RING: RING-path 0...OFF, BNON: Noise monitor 0...OFF, SOFTRX: Softclip RX 0...OFF, SOFTTX: Softclip TX 0...OFF, DC/DC-Converter ON/OFF,Mask ldbr: Digital tone at RO ldbl: Digital tone at LO1/LO2 MASK: Mask function DC/DC: DC/DC-converter 1...ON 1...ON 1...ON 1...ON
Burs
Burl
M1
M0
0000
Soft-RX
0
1
1
1
x
x
x
Soft-TX
Bnon
ring
x
0000 1...ON 1...ON 1...ON 1...ON
Revision 3.4
DC/DC
Mask
ldbr
ldbl
0...OFF, 0...OFF, 0...OFF, 0...OFF,
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Data Sheet AS2522B
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Address
Data
Control registers AS2522A, AS2522B
Default value after reset
AAAADDDD 32103210
1 0 0 0 16 gains Handsfree receive endgain Data RXgain TXgain 0x0 -20dB -30dB Min. receive volume : : 0xF 0dB -50dB Max. receive volume Handsfree switching characteristic off1 off0: BGN-offset 0 0 120mV 0 1 180mV 1 0 240mV 1 1 300mV Hfs1 HFs0: 0 0 0 1 1 0 1 1 Transmit gain Speed of voice switching max speed 0111
1
0
0
1
x
x
x
x
1000
Hfs1
Hfs0
off1
off0
1
0
1
0 16 gains
min speed [16], 16 steps, 1dB stepsize
0111
1
0
1
1 16 gains
Data HS-mode HF-mode 0x0 30dB 39dB : : : 0xF 45dB 54dB Receive gain [16], 16 steps, 1dB stepsize Data HS-mode HF-mode 0x0 -6dB 22dB : : : 0xF +9dB 37dB FSK-mode, LLC[2], LI-Voltage AS2522B:
FSK: Frequency select in single tone mode AS2522B ONLY FSK: 0 Single Tone frequencies are read from Addr. 4: frequ1, frequ0 1 Single Tone frequencies are read from Addr. 1: f4,f3,f2,f1
0111
1
1
0
0
x
x
x
x
0111
AS2522A FSK: For factory test only ! LIV: Voltage at pin LI 0...3.5V, 1...4.5V LLC1 LLC0: Line loss compensation setting 0 0 20mA-50mA 0 1 NO Line loss compensation 1 0 45-75mA 1 1 NO Line loss compensation Mute, Lh, Hf, Hook Switch Mute: Mute transmit 0...OFF, 1...ON His Hf Lh 0 xx On Hook 1 00 Off Hook, Handset mode 1 10 Off Hook, Handfree mode 1 11 Off Hook, Loudhearing mode Krat5,Test3,Test2,Test1: For factory test only !
FSK
Llc1
1
1
0
1
x
x
x
x
Llc0
Liv
0000
Mute
1
1
1
0
x
Krat5
x
Test3
x
Test2
His
Lh
Hf
x
Test1
0000
1
1
1
1x
x
x
x
Reset to defaults
na
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Data Sheet AS2522B
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Electrical characteristics
Electrical characteristics are measured with the Test Circuit application. Typical mean values will not be tested.
Absolute maximum ratings
Positive Supply Voltage Input Current Input Voltage (LS) Input Voltage (LI, CS) Input Voltage (STB, RI) Digital Input Voltage Electrostatic Discharge (HBM 1.5k-100pF) Storage Temperature -0.3V <= VDD <= 7V +/- 25mA -0.3V <= Vin <= 12V -0.3V <= Vin <= 8V -2V <= Vin <= VDD+0.3V -0.3V <= Vin <= VDD+0.3V +/- 1000V -65C to +125C
Recommended operating conditions
Supply Voltage (generated internally) Operating Temperature 3V <= VDD <= 5V -25C to +70C
DC characteristics
ILine=15mA w/o operation of any additional external circuitry, unless other specified Symbol Parameter Operating Current Operating Current Line Voltage LIVolt=0 Line Voltage LIVolt=1 Output Current, Sink CS,SS Conditions Speech Mode Handsfree Mode 15mA<=ILINE<=100mA 3.2 4.2 Min Type 3 7 3.5 4.5 1 Max 6 10 3.8 4.8 Units mA mA V V mA Test Y Y Y Y N
IDDS IDDH VLI IOL
VOL=0.4V
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Data Sheet AS2522B
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Transmit characteristics
ILine=15mA f=800Hz, default settings unless other specified Symbol Parameter Transmit Gain M1/M2 LS Conditions Min 35 Type +36.5 Max 38 Units dB Test Y
AM1/2TX AM3/4TX
ATX
ZAC(syn)=1000 ZAC(syn)=1000
f = 500Hz ... 3.4kHz 16 steps
Transmit Gain M3/M4 LS Variation with frequency Control range M1/M2 LS
43
+45.0
47
dB
Y
0.8 -7/+8
dB dBr
N N
AVRM12 AVRM34 THD VAGC1 VAGC2 ASCO tattack tdecay ZIN-M1/2 ZIN-M3/4 VINmax VNO
Control range M2/M4 LS Distortion Soft Clip Level M1/M2 LS at LS Soft Clip Level M3/M4 LS at LS Soft Clip Overdrive M1/M2 - M3/M4 Attack time Decay time Input Impedance M1/M2 Input Impedance M3/M4 Input Voltage Range M1/2 - M3/4 Noise Output Voltage LS
16 steps
-7/+8
dBr
N
VLS=0.25VRMS
2
2
% VP
Y N
2
VP
N
20 70 100 10 10 differential 1 -72
dB us/6dB ms/6dB k k Vp dBmp
N N N N N N Y
TAMP=25C
Handset mode Gain = 36.5dB Mute activated 60
AMUTE
Mute Attenuation
dB
Y
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Data Sheet AS2522B
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Receive characteristics
ILine=15mA f=800Hz, default settings unless other specified Symbol Parameter Receive Gain LS RO Conditions Min -2 Type -0.5 Max 1 Units dB Test Y
ARO ALO12
ARX
ZAC(syn)=1000
Vol default
Receive Gain LS LO1/LO2 Variation with frequency Control range LS RO
ZAC(syn)=1000
Vol maximum f=500Hz to 3.4kHz 16 steps
+28
+29.0
+31
dB
Y
0.8 -7/+8
dB dBr
N N
AVRRO AVRLS THDLS THDRO VUFC
Control range LS LS1/LS2 Distortion LS1/LS2 Distortion RO Unwanted Freq. Cmp.
16 steps
-7/+8
dBr
N
VLS=0.25VRMS VLS =0.25VRMS
f = 200 ... 20kHz 1 2 10 70 100
5 2 -60
% % dBm VP VP dB us/6dB ms/6dB
Y Y Y N N N N N Y
VAGCRO Soft Clip Level
RO
VAGCLS ASCLS tattack tdecay VNO ZIN-RI VINmax ZIN-STB VINmax ST RL
ZAC/C
Soft Clip Level LS1/2 Soft Clip Overdrive LS1/2 Attack time Decay time Noise Output Voltage RO Input Imp. RI Input Voltage Range RI Input Imp. STB Input Volt. Range STB Side tone Return Loss Temp. Variation
TAMP=25C
Gain = 3dB 8 2 80 2
-72
dBmp
k Vp k Vp dB
N
N
VRI<=0.25VRMS ZAC(syn)=1000
26 18 0.5
Y Y
dB /C
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Data Sheet AS2522B
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DTMF characteristics
ILine=15mA w/o operation of any additional external circuitry, unless other specified, default settings Symbol Parameter Tone level low group at LS DTMF level range low group at LS Preemphasis L-H Unwanted frequency components Default 13 steps Prg. in Service mode Preemphasis=1 300 Hz - 4.3kHz 4.3kHz - 7kHz 7kHz - 10kHz 10kHz - 14kHz 14kHz - 28.5kHz 28.5kHz - 40kHz 2.7 Conditions Min -7 Type -6 -18/-6 3.2 3.7 -40 -46 -52 -58 -70 -80 1.2 Rel to LS programmable in service mode Rel to LS programmable in service mode -36 -30 -24 -18 -15 -9 -3 +3 Max -5 Units dBm dBm dB dBm dBm dBm dBm dBm dBm % dBr dBr dBr dBr dBr dBr dBr dBr Test Y N Y Y Y Y Y Y Y Y N N N N N N N N
VMFlow MFrange
VL-H
UFC
f
Frequency deviation Comfort tone handset
VCT-H
VCT-L
Comfort tone Loudspeaker
Ringer
Symbol F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 Parameter Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency Frequency 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Conditions Min Type 0 800 1067 1333 1300 2100 1200 2200 980 1180 1070 1270 1650 1850 2025 2225 Max Units Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Hz Test N Y Y Y N N N N N N N N N N N N
770 1025 1280
830 1110 1385
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Data Sheet AS2522B
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Miscellaneous
Symbol Parameter Pacifier level at RO Pacifier level at LS1/2 Conditions RL = 150 Ohm RL = 50 Ohm Min Type 30 100 Max Units mVpp mVpp Test N N
VPARO VPALS
Test circuit
15nF 13 100uF 10uF 11 10 600 Iline Vac 300 1uF 7 BC327 6k 14 8 STB CS RO CI RECI 15 17 100nF 150 M2 4 M1 6 15nF LS RI LI 15nF M3 M4 5 15nF 3
10V
30
10uF
32 9
VSSD VSS RECV
10k 100nF 16 10k 23
AS2522A
BC327 12 22 470uF SS LO2 VPP 50 25 LO1 VSSA xCS DO DI CLK 27 28 29 30 24
21
CM
AGND
VDDD
18
26
19
20
100uF
1uF
22uF
1uF
10uF
31 3.58MHz Resonator
1
5V1
Revision 3.4
2
OSC
VDD
CBN
FT1
FT2
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Data Sheet AS2522B
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Typical application
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Data Sheet AS2522B
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Bonding Diagram
32 Lead 7x7mm TQFP dimensions
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Data Sheet AS2522B
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Ordering Information
Number AS2522B Q AS2522B F Package TQFP DOF Description plastic thin quad flat package - 32 leads (suffix T) Dice-on-Foil
Packaging
32-pin plastic TQFP (suffix Q) For exact mechanical package dimensions please see austriamicrosystemsAG packaging information.
Pin-out, Marking
VSSD OSC CLK DI DO xCS VDDD VSSA
FT1 FT2 M4 M2 M3 M1 STB CS
1 2 3 4 5 6 7 8
YYWWAAA AS2522X
24 23 22 21 20 19 18 17
LO1 LO2 VPP CM CBN AGND VDD RO
Devices sold by austriamicrosystems AG are covered by the warranty and patent identification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application.
YY WW AAA X
year of production calendar week of production austriamicrosystemsAG assembly ID revision
VSS 9 LI 10 RI 11 SS 12 LS 13 CI 14 RECI 15 RECV 16
32 31 30 29 28 27 26 25
Copyright
Copyright (c) 1997-2002, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered (R). All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.
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Data Sheet AS2522B
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Contact
Headquarters
austriamicrosystems AG Communications Business Unit A 8141 Schloss Premstatten, Austria T. +43 (0) 3136 500 0 F. +43 (0) 3136 525 01 www.austriamicrosystems.com
Sales Offices
Germany
austriamicrosystems Germany GmbH Tegernseer Landstrasse 85 D-81539 Munchen, Germany Phone: +49/89/693643-0 Fax: +49/89/693643-66
USA (east)
austriamicrosystems USA, Inc. Suite 400, 8601 Six Forks Road Raleigh, NC 27615, USA Phone: +1/919/676 5292 Fax: +1/919/676 5305
France
austriamicrosystems France S.a.r.l. 124, Avenue de Paris F-94300 Vincennes, France Phone: +33/1/43 74 00 90 Fax: +33/1/43 74 20 98
United Kingdom
austriamicrosystems UK, Ltd. Coliseum Business Centre, Watchmoor Park Camberley, Surrey, GU15 3YL, UK Phone: +44/1276/23 3 99 Fax: +44/1276/29 3 53
Italy
austriamicrosystems Italy S.r.l. Via Leone Tolstoi, 64 I-20146 Milano, Italy Phone: +39/0242/36713 Fax: +39/0242/290889
Japan
austriamicrosystems AG Shin Yokohama Daini, Center Bldg. 10F 3-19-5, Shin Yokohama Kohoku-ku, Yokohama 222-0033, Japan Phone: +81/45/474 0962 Fax: +81/45/472 9845
Switzerland
austriamicrosystems Switzerland AG Rietstrasse 4 CH-8640 Rapperswil, Switzerland Phone: +41/55/220 9000 Fax: +41/55/220 9001
Distributors & Representatives
austriamicrosystems AG is represented by distributors in the following countries. Please contact your nearest regional sales office for the distributor address: Spain, Israel, Korea, Hong-Kong, Taiwan, Malaysia, Singapore, India, Brazil
USA (west)
austriamicrosystems USA, Inc. Suite 116, 4030 Moorpark Ave, San Jose, CA 95117, USA Phone: +1/408/345 1790 Fax: +1/408/345 1795
Application Support
Please contact your local sales office or your distributor.
Revision 3.4
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Price & Availability of AS2522B

	To Download AS2522B Datasheet File
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