BD3490FV-E2

Audio Special Purpose Overview

The BD3490FV-E2 is a stereo audio sound processor manufactured by ROHM Semiconductor, designed for applications such as boom boxes and portable audio devices. It operates on a single supply voltage ranging from 4.75 V to 9.5 V with a typical quiescent current of 7 mA. The device integrates a two-band equalizer (bass and treble), simple surround functionality, and features an I2C bus interface for digital control. It provides independent volume adjustment with a range of 0 to -87 dB in 1 dB steps. The component is housed in a 28-pin SSOP-B package and supports an operating temperature range of -40°C to +85°C.

Audio Special Purpose Feature Summary

• Integrated 2-band tone control (bass/treble) with I2C digital interface
• Stereo input/output with independent volume control (0 to -87 dB)
• Low power consumption: 7 mA typical quiescent current
• Wide supply voltage range: 4.75 V to 9.5 V
• Built-in simple surround function
• Low noise (5 µVrms typ.) and low distortion (0.002% typ.)

Audio Special Purpose Applications

• Boom box voice control systems
• Consumer audio equipment requiring tone shaping
• Portable audio devices with limited power budgets

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape/reel specifications. Ensure compatibility with I2C bus protocols used in the target system design. Confirm RoHS compliance status if required by regional regulations. Check for any end-of-life notifications or recommended alternative parts from the manufacturer.

Audio Special Purpose Selection Notes

Select this component when a compact solution for stereo tone processing with digital control is required. The 28-SSOP-B package suits surface-mount designs with space constraints. Verify that the system's microcontroller can support the I2C communication protocol. Ensure the supply voltage remains within the 4.75 V to 9.5 V range for proper operation. Note that this product is not recommended for use in automotive equipment.