SC9235 and SC9235S are dedicated integrated circuits designed for electronic volume control of audio devices. The circuit is made by CMOS process. The main features: Through the gain and attenuation input terminals, attenuation can be controlled in the range of 0dB to -78dB. The circuit has a 20dB tap to form an equal-loudness circuit. Using polycrystalline resistors to achieve low distortion and high performance audio systems. There is an internal DC output (7 levels) to form a volume level meter. The current consumption in standby state is very small, and the volume level data can be maintained at this time. Package type is DIP16 or SOP16.