SC9153A

ELECTRONIC VOLUME CONTROLLER SC9153A DESCRIPTION The SC9153A is CMOS IC which has been designed for electronization volume control of audio equipment,etc. FEATURES *Wide operating voltage range(VDD=6V ~ 12V) *Low current comsumption . *Attenuation can be controlled from 0dB to –66dB by 2dB/step *Both of dual power suppliers of (+) and (-) and a single power supply can be used. *Be capable of controlling attenuation by means of the built-in oscillator and the up/down terminals. DIP-16 BLOCK DIAGRAM U/D 10 OSC 9 OSC VDD 16 U/D 7 Bits Bidirectional CK shift registor INT L-OUT1 2 L-IN1 3 A-GND 4 L-IN2 5 L-OUT2 6 A-SW A-SW A-SW A-SW A-SW A-SW A-SW A-SW A-SW A-SW A-SW A-SW A-SW 6 Bits Latch Circuit 7 Bits Latch Circuit VDD CK CK VSS 1 U/D 6 Bits Bidirectional CK shift registor INT Auto Initialize Circuit Constant Current Circuit 7 INH 8 DCO 7 Bits Latch Circuit CK A-SW A-SW A-SW A-SW A-SW A-SW A-SW 15 R-OUT1 14 R-IN1 6 Bits Latch Circuit CK A-SW A-SW A-SW A-SW A-SW A...