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.
The SC9235 is a volume‑control integrated circuit with a 20 dB gain range and low‑power standby operation. The document lists its main features, pin assignments, and typical application circuits.
Technical data such as supply voltage, power consumption, temperature limits, and package dimensions are given, along with guidelines for initialization, standby mode, and MOSFET handling precautions. This manual is written in Chinese.
| Supply voltage (Vpp) | -0.3 V to 15 V |
|---|---|
| Power consumption | 300 mW |
| Input voltage range (VN) | -0.3 V < Vpp + 0.3 V |
The device operates with a supply voltage from –0.3 V up to Vpp + 0.3 V.
Typical power consumption is 300 mW.
The IC is offered in DIP‑16 and SOP‑16 packages.