BD37524FS is a sound processor built-in 3-band equalizer for car audio. It has functions of stereo 5ch input selector, input-gain control, main volume, loudness, 5ch fader volume, LPF for subwoofer, level meter. The advanced switch circuit can reduce various switching noise.
This technical note describes the BD37524FS sound processor, a semiconductor device with a built‑in 3‑band equalizer for car audio applications. It details the functions such as stereo 4‑input selector, input‑gain control, volume, loudness, fader, LPF and level meter, and explains the advanced switch circuit that reduces switching noise.
The document includes functional specifications, electrical characteristics, pin‑out diagrams, timing charts for the I²C‑bus, ordering part numbers and packaging information, as well as legal notices and usage guidelines.
| Input selector | Stereo 4 input |
|---|---|
| Input gain range | 0~20 dB (1 dB step) |
| Power supply voltage (absolute max) | 10.0 V |
| Operating power supply voltage | 7.0 V – 9.5 V |
| Storage temperature range | -55 °C to +150 °C |
| Package type | SSOP‑A24 |
The input gain can be set from 0 dB to +20 dB in 1 dB steps.
The device operates with a VCC of 7.0 V to 9.5 V.
It is supplied in an SSOP‑A24 package.
The part can be stored from –55 °C up to +150 °C.