BD37534FV-E2

Audio Special Purpose Overview

The BD37534FV-E2 is a sound processor IC from ROHM Semiconductor designed for car audio applications. It features a built-in 3-band equalizer (Bass, Middle, Treble), stereo input selector, main volume control, loudness function, and 5-channel fader volume. The device supports I2C bus interface for digital control of parameters such as EQ gain/frequency, LPF cutoff, and loudness filter settings. It operates within a supply voltage range of 7 V to 9.5 V and draws a typical quiescent current of 38 mA. The component is housed in a 28-SSOP-B package and functions reliably across an operating temperature range of -40°C to +85°C.

Audio Special Purpose Feature Summary

• Built-in 3-band equalizer with ±20 dB gain adjustment and 1 dB step resolution
• I2C bus interface for controlling volume, EQ, fader, and input selection
• Advanced switch circuit reduces switching noise (no-signal, low frequency)
• Stereo input selector with single-ended and ground isolation inputs
• Built-in LPF for subwoofer output and mixing input capability
• Loudness filter with adjustable Q, Gv, and fo via I2C
• 5-channel fader volume control

Audio Special Purpose Applications

• Car audio systems requiring integrated tone processing and equalization
• Audio equipment needing digital control of bass, mid, treble, and loudness
• Systems utilizing I2C communication for audio parameter adjustment

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix E2 against the manufacturer's latest documentation to confirm pinout compatibility and RoHS status. Ensure the procurement source provides valid traceability. Confirm that the 28-SSOP-B package dimensions match the target PCB footprint requirements before finalizing orders.