KA8603 UNIVERSAL SPEECH NETWORK INTRODUCTION 16-DIP-300A The KA8603 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 KA8603 can be operated down to D.C line 1.6V. FEATURES 16-SOP-225 • 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) ORDERING INFORMATION Device Package KA8603 16-DIP-300A KA8603D 16-SOP-225 Operating Temperature - 25°C ~ + 75°C BLOCK DIAGRAM Vcc VL 13 1 MUTE 12 INVERTER 5 RXGA 4 RXO 2 TXGA1 RXI 10 RXI RX AMP MXI MIC- 6 MIC+ 7 MIC AMP TX AMP ATTENU ATOR MF 11 BIAS & REFERENCE DTMF AMP BAND GAP REF AGC 9 8 14 GND CST VST 15 3 AGC TXGA2 16 RDC KA8603 UNIVERSAL SPEECH NETWORK PIN CONFIGURATION VL 1 16 RDC TXGA1 2 15 AGC TXGA2 3 14 VST RXO 4 13 Vcc RXGA 5 12 MUTE MIC- 6 11 MF MIC+ 7 10 RXI CST 8 9 GND KA8603 PIN DESCRIPTION Pin No Symbol Description 1 VL Positive power line and TX Amp output 2 TXGA1 TX gain adjustment 3 TXGA2 TX gain adjustment 4 RXO RX output 5 RXGA RX gain adjustment 6 MIC- Mic(-) input 7 MIC+ Mic(+) input 8 CST Current stabilizer 9 GND Ground 10 RXI RX input 11 MF DTMF Input 12 MUTE Mute ‘High’: DTMF mode, Mute ‘Low’: speech mode 13 VCC Internal power supply pin 14 VST Voltage stabilizer 15 AGC Automatic gain control 16 RDC DC Resistance control KA8603 UNIVERSAL SPEECH NETWORK ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Value Unit Line Voltage VL 15 V Line Current IL 150 mA Surge Line Current IL(SURGE) 200 mA Power Dissipation PD 1.0 W Operating Temperature T ORP - 25 ∼ 75 °C Storage Temperature T STG - 55 ∼ 150 °C ELECTRICAL CHARACTERISTICS (Ta = 25°C, f = 1KHz, IL = 15mA, unless otherwise noted) Characteristic Line Voltage Symbol VL Test Conditions Min Typ Max IL = 4mA - 2.1 - IL = 15mA 3.55 3.9 4.25 IL = 50mA 4.1 4.6 5.1 IL = 140mA - 6.45 7.0 Unit V Line Voltage with RUP VLU Between Pin14 & Pin 16 Rup = 220KΩ 4.15 4.35 4.55 V Line Voltage with RDOWN VLD Between Pin 14& Pin 1 RDOWN = 330KΩ 3.25 3.45 3.65 V IL = 15mA 49.5 51.5 53.5 IL = 50mA 45.5 47.5 49.5 IL = 80mA 43.5 45.5 47.5 f = 300 to 3400Hz - ± 0.2 - THD = 2% - 1.6 - THD = 10% 1.7 2.2 - TX Gain TX Gain frequency response GV (TX) ∆GTXF TX Dynamic output voltage VO (TX) MIC Input Impedance ZI(MIC) RX Gain RX Gain frequency response RX Dynamic output voltage GV(RX) ∆GRXF VO (RX) RTX = 68 KΩ VI = 3mVrms RLOAD = 150Ω+10u - 64 - IL = 15mA 28.5 30.5 32.5 IL = 50mA 24.5 26.5 28.5 IL = 80mA 22.5 24.5 26.5 - ± 0.2 - THD = 2% (RL = 150Ω) 0.22 0.29 - THD = 10% 0.30 0.40 - f = 300 to 3400Hz dB dB Vrms KΩ dB dB Vrms KA8603 UNIVERSAL SPEECH NETWORK ELECTRICAL CHARACTERISTICS (Ta = 25°C, f = 1KHz, IL = 15mA, unless otherwise noted) Characteristic Symbol Test Conditions Min Typ Max Unit DTMF GAIN GV (MF) 23.5 25.5 27.5 dB DTMF Input Impedance ZI (MF) - - 20.7 - KΩ VIH (MUTE) - 1.5 - VCC VIL (MUTE) - - - 0.8 - -6 - dB - -6 - dB - -72 - dBmp - 50 - uV MUTE Input Voltage TX Gain variation range by AGC ∆GTXA RX Gain variation range by AGC ∆GRXA TX Noise Output Voltage (Psophometric weighted) RX Noise Output Voltage (Psophometric weighted) VTNO VRNO RTX = 68KΩ (MUTE = H) RAGC = 180KΩ IL = 15 ~ 80mA RAGC = 180KΩ IL = 15 ~ 80mA - - V KA8603 UNIVERSAL SPEECH NETWORK APPLICATION CIRCUIT 10µF + TIP RECEIVER 100K 220µF + 620 RING 12V 100pF 120K 1 13 VL 4 VCC 5 RXO+ RXGA RXI AMP 100nF RXI AMP 10 RXI MIC- 3.9K TX AMP 7 390 MIC+ 16 pin 14 6 MIC AMP VDC Rup TXGA1 2 200 TXGA2 MUTE CST 3 12 8 MF 11 GND AGC VST 9 15 14 Rdown pin1 + Zc Zr 500p 20 68K 3.6K 180K 1µF MIC