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UNIVERSAL SPEECH NETWORK
S1T8603
INTRODUCTION
16-DIP-300A The S1T8603 can fulfill the standards of other countries by changing the external component. Dynamic or piezoelectric type can be used with receiver. Each gain is controlled with AGC in accordance with the line current. The S1T8603 can be operated down to D.C line 1.6V.
FEATURES
* * * * * * * Independent adjustment of DC resistance and AC impedance. ECM or dynamic microphone can be used. DTMF signal interface. Mute function Operates at the low line voltage (1.6V) Low or high impedance receiver type can be used. Low line current operation. (IL = 4mA) 16-SOP-225
ORDERING INFORMATION
Device S1T8603X01-D0B0 S1T8603X01-S0B0 Package 16-DIP-300A 16-SOP-225 Operating Temperature - 25C to +75C
1
S1T8603
UNIVERSAL SPEECH NETWORK
BLOCK DIAGRAM
Vcc 13 MUTE 12
INVERTER
VL 1
5
RXI
RXI 10 4
RX AMP MXI
RXGA RXO
2 MICMIC+ 6 7
ATTENU ATOR BIAS & REFERENCE DTMF AMP MIC AMP TX AMP
TXGA1
MF 11
AGC
BAND GAP REF 3 16 R DC
9 GND
8 CST
14 VST
15
AGC TXGA2
PIN CONFIGURATION
VL 1 TXGA1 TXGA2 RXO RXGA MICMIC+ 2 3 4 5 6 7 S1T8603
16 RDC 15 AGC 14 VST 13 Vcc 12 MUTE 11 MF 10 RXI 9 GND
CST 8
2
UNIVERSAL SPEECH NETWORK
S1T8603
PIN DESCRIPTION
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol VL TXGA1 TXGA2 RXO RXGA MICMIC+ CST GND RXI MF MUTE VCC VST AGC RDC Description Positive power line and TX Amp output TX gain adjustment TX gain adjustment RX output RX gain adjustment Mic(-) input Mic(+) input Current stabilizer Ground RX input DTMF Input Mute `High': DTMF mode, Mute `Low': speech mode Internal power supply pin Voltage stabilizer Automatic gain control DC Resistance control
ABSOLUTE MAXIMUM RATINGS
Characteristic Line Voltage Line Current Surge Line Current Power Dissipation Operating Temperature Storage Temperature Symbol VL IL IL(SURGE) PD TORP TSTG Value 15 150 200 1.0 - 25 to +75 - 55 to +150 Unit V mA mA W C C
3
S1T8603
UNIVERSAL SPEECH NETWORK
ELECTRICAL CHARACTERISTICS
(Ta = 25C, f = 1kHz, IL = 15mA, unless otherwise noted) Characteristic Line Voltage Symbol VL Test Conditions IL = 4mA IL = 15mA IL = 50mA IL = 140mA Line Voltage with RUP Line Voltage with RDOWN TX Gain VLU VLD GV (TX) Between Pin14 & Pin 16 Rup = 220k Between Pin 14& Pin 1 RDOWN = 330k RTX = 68k VI = 3mVrsm IL = 15mA IL = 50mA IL = 80mA TX Gain frequency response TX Dynamic output voltage GTXF VO(TX) ZI(MIC) GV(RX) RLOAD = 150+10u f = 300 to 3400Hz THD = 2% THD = 10% - IL = 15mA IL = 50mA IL = 80mA RX Gain frequency response RX Dynamic output voltage GRXF VO(RX) GV (MF) ZI (MF) VIH (MUTE) VIL (MUTE) TX Gain variation range by AGC RX Gain variation range by AGC TX Noise Output Voltage (Psophometric weighted) RX Noise Output Voltage (Psophometric weighted) GTXA GRXA VTNO VRNO f = 300 to 3400Hz THD = 2% (RL = 150) THD = 10% RTX = 68K (MUTE = H) - - - RAGC = 180K IL = 15 ~ 80mA RAGC = 180K IL = 15 ~ 80mA - - Min. - 3.55 4.1 - 4.15 3.25 49.5 45.5 43.5 - - 1.7 MIC Input Impedance RX Gain - 28.5 24.5 22.5 - 0.22 0.30 23.5 - 1.5 - - - - - Typ. 2.1 3.9 4.6 6.45 4.35 3.45 51.5 47.5 45.5 0.2 1.6 2.2 64 30.5 26.5 24.5 0.2 0.29 0.40 25.5 20.7 - - -6 -6 -72 50 Max. - 4.25 5.1 7.0 4.55 3.65 53.5 49.5 47.5 - - - - 32.5 28.5 26.5 - - - 27.5 - VCC 0.8 - - - - dB dB dBmp uV dB k V dB Vrms dB k dB Vrms dB V V V Unit
DTMF GAIN DTMF Input Impedance MUTE Input Voltage
4
UNIVERSAL SPEECH NETWORK
S1T8603
APPLICATION CIRCUIT
10F + TIP 620 RING 12V 120K 1 VL 100nF 10 RXI 3.9K
TX AMP MIC AMP RXI AMP
220F +
100K
RECEIVER
100pF 13 VCC
RXI AMP
4 RXO+
5 RXGA
MIC-
6
390 16 pin 14 Rup 200 VDC TXGA1 2 TXGA2 MUTE CST 3 12 8 11 MF GND 9 AGC 15 VST 14
7 MIC+
MIC
Rdown pin1 +
Zc
Zr
500p 20
68K
3.6K
180K
1F
5
S1T8603
UNIVERSAL SPEECH NETWORK
NOTES
6

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