TA8194Z

Muting IC TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8194Z The TA8194Z is a muting IC to prevent the “POP” noise made at time of power on and off of audio equipments. This IC has 4 sensor terminals, muting control terminal and supply control terminal. In case of sensing voltage rising, muting control signal occurs and after that supply control signal occurs and muting signal maintains for 1s. In case of sensing voltage setting, muting control signal occurs and after that supply control signal stops. This IC also has manual muting terminal and protection function. Features · 4 sensor terminals: VCC, B1, B2, B3 · Muting circuit control signal output · Power supply circuit control signal output · Manual muting control terminal · Protection function terminal · Operating supply voltage range: VCC (opr.) = 8~18.0V (Ta = 25°C) Weight: 0.99g (typ.) TA8194Z 1 2002-10-30 Block Diagram TA8194Z 2 2002-10-30 Terminal Explanation Pin No. Function Mute out 3 Muting control signal output VS out 4 Supply control signal output TC (timing condenser) 5 Muting time condenser terminal M.Mute (manual mute) 6 V6 ≥ 0.8V→mute out = on VREF (reference voltage) 7 Reference voltage for comparator TA8194Z Equivalent Circuit 3 2002-10-30 Pin No. Function Prot. (protection) 9 V9 ≥ 0.8V→mute out = on, VS out = off 10 B3 voltage sense terminal-3 11 B2 voltage sense terminal-2 12 B1 voltage sense terminal-1 VCC 13 Supply terminal voltage sense terminal CH (charge h...