BD37543FS-E2

Audio Special Purpose Overview

The BD37543FS-E2 is a sound processor IC from ROHM Semiconductor designed for automotive audio applications. It features a built-in 3-band equalizer (Bass, Middle, Treble) and operates within a supply voltage range of 7V to 9.5V. The device draws a typical quiescent current of 38 mA and provides six outputs. It supports stereo inputs with selectable ISO configurations and includes digital volume control with a range of +15 dB to -79 dB in 1 dB steps. The component is housed in a 32-pin SSOP-A package and is rated for an operating temperature range of -40°C to 85°C.

Audio Special Purpose Feature Summary

• Built-in 3-band equalizer for Bass, Middle, and Treble adjustment
• Digital volume control with 1 dB step resolution across a +15 dB to -79 dB range
• Supports multiple input configurations including Stereo 3/1/0 ISO and Stereo 1/2/3 ISO
• Low power consumption with a typical quiescent current of 38 mA
• I2C bus interface for control

Audio Special Purpose Applications

• Automotive audio systems
• Car audio components requiring integrated EQ and volume control
• Sound processors utilizing I2C bus interface for configuration

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix E-2 against the manufacturer's latest documentation to confirm compliance with RoHS directives and material declarations. Ensure the procurement channel provides genuine components from ROHM Semiconductor or authorized distributors to guarantee authenticity and traceability. Confirm that the 32-SSOP-A package type matches the target PCB footprint requirements.

Audio Special Purpose Selection Notes

Select this component when a compact solution for 3-band tone shaping and digital volume management is required. The BD37543FS-E2 is suitable for designs needing a single-chip replacement for discrete tone control circuits. Consider the 7V to 9.5V supply requirement and the 38 mA quiescent current draw during power budgeting. Verify that the 6-output configuration meets the system's channel count needs without additional amplification stages.

Audio Special Purpose Part Context

The BD37543FS-E2 belongs to a series of sound processors designed to standardize control software and circuit boards across different models. This series aims to reduce external components and save space while providing high-performance audio characteristics. The part is part of ROHM's lineup of audio special purpose ICs, focusing on integrated tone processing capabilities.