BD34701KS2

Audio Special Purpose Overview

The BD34701KS2 is a high-performance 8-channel sound processor manufactured by ROHM Semiconductor, housed in a 52-pin SQFP-T (10x10 mm) surface-mount package. It operates on a single power supply ranging from 6.5 V to 7.5 V with a typical operating current of 22 mA. The device features independent volume control for all eight channels using μ-step technology, offering a range of +32 dB to -95 dB and mute (-∞ dB) with 0.5 dB steps. It includes an integrated input selector supporting up to 8 single-ended or dual-ended inputs, capable of Zone 2 configuration. Key performance metrics include a THD+N of 0.0004% and a gain of 0 dB. It supports a 2-wire serial interface (I2C) for control.

Audio Special Purpose Feature Summary

• 8-Channel Independent Volume Control: Supports μ-step volume adjustment with 0.5 dB resolution for smooth switching without impact noise.
• Integrated Input Selector: Accommodates up to 8 single-ended inputs or dual-ended inputs, supporting Zone 2 configuration.
• High Fidelity Performance: Achieves a THD+N of 0.0004% with a total harmonic distortion specification of 0.0004%.
• Serial Interface Control: Utilizes a 2-wire serial interface (I2C) for configuration and data transmission.

Audio Special Purpose Applications

• Home Theater Audio Systems
• Surround Sound Processors
• Consumer Audio Equipment

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix and packaging format against official ROHM documentation before procurement. Confirm that the component meets humidity sensitivity requirements for your assembly process. Ensure the voltage supply strictly adheres to the 6.5 V to 7.5 V operational limits to prevent device malfunction.

Audio Special Purpose Selection Notes

Select this component for designs requiring multi-channel audio processing with precise volume control. Ensure the PCB layout accommodates the 52-SQFP-T package dimensions. Verify that the host microcontroller supports the required 2-wire serial protocol for proper integration and control.

Audio Special Purpose Part Context

This part belongs to the ROHM audio signal processor family, designed specifically for high-channel-count audio applications. It serves as a central processing unit for managing multiple audio sources and channel outputs in consumer electronics, distinct from power amplifiers or DACs.

Audio Special Purpose Replacement Considerations

Check ROHM's official obsolescence notices and alternative product lists. Cross-reference pin compatibility and electrical specifications with potential substitutes such as other models in the BD347xx series if available.

Audio Special Purpose FAQ

What is the volume step resolution for the BD34701KS2?

The volume step resolution is 0.5 dB, allowing for precise attenuation adjustments across the 8 channels.

Does the BD34701KS2 support Zone 2 output?

Yes, the device supports up to Zone 2 output via its integrated input selector capabilities.

What is the maximum operating voltage for this IC?

The maximum operating voltage is 7.5 V. The minimum operating voltage is 6.5 V.