ROHM BD37524FS Data Sheet
Summary
Enhance your car or portable audio system with this advanced sound processor featuring a built-in 3-band equalizer. It provides critical control over volume, equalization (bass, middle, treble), and includes proprietary advanced switching technology to minimize noisy signal interference. Designed for professional use in automotive, mini compo, and TV audio equipment, the manual offers comprehensive technical specifications covering inputs, gain stages, and filter controls, making it an optimal solution for superior sound quality system design.
Page 1 Text Content
Sound Processor Series for Car Audio
Sound Processor with Built-in 3-band Equalizer
No.10085EAT05
BD37524FS
●Description BD37524FS is sound processors built-in 3-band equalizer for car audio. The functions are stereo 5ch input selector, input-gain control, main volume, loudness, 5ch fader volume, LPF for subwoofer, level meter. Moreover, “Advanced switch circuit”, that is ROHM original technology, can reduce various switching noise (ex. No-signal, low frequency likes 20Hz & large signal inputs). “Advanced switch” makes control of microcomputer easier, and can construct high quality car audio system.
●Features 1) Reduce switching noise of input gain control, mute, main volume, fader volume, bass, treble, loudness by using
advanced switch circuit [Possible to control all steps] 2) Built-in 1 differential input selector and 4 single-ended input selectors 3) Built-in ground isolation amplifier inputs, ideal for external stereo input. 4) Built-in input gain controller reduces switching noise for volume of a portable audio input. 5) Decrease the number of external components by built-in 3-band equalizer filter, LPF for subwoofer, loudness filter. And, possible to control Q, Gv, fo of 3-band equalizer and fc of LPF, fo, Gv of loudness by I2C BUS control freely 6) It is possible for the bass, middle, and treble to the gain adjustment quantity of ±20d B and 1 d B step gain adjustment. 7) Terminals for the subwoofer outputs are equipped. 8) Bi-CMOS process is suitable for the design of low current and low energy. And it provides more quality for small scale regulator and heat in a set. 9) Package is SSOP-A24. Putting input-terminals together and output-terminals together can make PCB layout easier and can makes area of PCB smaller. 10) It is possible to control by 3.3V / 5V for I2C BUS.
●Applications It is the optimal for the car audio. Besides, it is possible to use for the audio equipment of mini Compo, micro Compo, TV etc with all kinds.
www.rohm.com 2010.03 - Rev.A 1/25 © 2010 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM BD37524FS Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 26 |
| File Size | 520.29 KB |
| Published | June 18, 2026 |
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Frequently Asked Questions
How does the unit prevent switching noise in volume or gain controls?
It utilizes an 'Advanced switch circuit' to reduce various types of switching noise in inputs like volume, main control, and fader.
What voltages are required for optimal operation?
The specified operating voltage (VCC) range is 7.0 V minimum up to 9.5 V maximum.
Does the processor support various audio input types?
Yes, it features a Stereo 4-input selector and a Differential 1-input selector.
What safety measures must be implemented when using this product?
Users must implement safety measures like derating, redundancy, or fire control to guard against physical injury or damage caused by failure.
Can this sound processor be used outside of automotive systems?
Yes, while optimal for car audio, it can also be used with equipment such as mini Compo, micro Compo, and TVs.