BU7831KN-E2

Audio Special Purpose Overview

The BU7831KN-E2 is a fully integrated audio processor and voice/audio mixer & selector IC designed for consumer audio applications. It features 6 channels, operates on a 2.5 V to 3.3 V supply, and is housed in a compact 20-VQFN (4.2x4.2 mm) package. The device supports serial interface configuration and includes features such as pop-noise reduction and soft mute functions.

Audio Special Purpose Feature Summary

• Fully integrated audio processor with 6-channel capability.
• Voice/Audio Mixer and Selector functionality.
• Compact 20-VFQFN (4.2x4.2 mm) surface-mount package.
• Operating voltage range: 2.5 V to 3.3 V.
• Operating temperature range: -30°C to +85°C.

Audio Special Purpose Applications

• Consumer audio devices.
• Portable audio players.
• Mobile devices requiring voice/audio mixing.

Audio Special Purpose Procurement Notes

This component is listed as Obsolete/End-of-Life (EOL) by ROHM Semiconductor. Availability is limited to remaining stock from authorized distributors or secondary markets. Verify RoHS3 compliance status if required for the target application.

Audio Special Purpose Selection Notes

Select this component for applications requiring integrated path selection between multiple stereo sources and outputs in a space-constrained design. Ensure the system power supply remains within the 2.5 V to 3.3 V range. Note that the part is discontinued; consider replacement options early in the design lifecycle.

Audio Special Purpose Part Context

The BU7831KN-E2 belongs to the BU7831 series of audio accessory ICs from ROHM Semiconductor. It consolidates signal routing, mixing, and amplification into a single LSI to reduce discrete component count. The 'E2' suffix typically denotes specific packaging or revision details consistent with ROHM's naming convention.

Audio Special Purpose Replacement Considerations

As the BU7831KN-E2 is discontinued, evaluate alternative audio mixers or selectors from ROHM or other manufacturers. Key parameters to verify include channel count, package dimensions (20-VQFN), supply voltage range, and interface compatibility. Consult ROHM product change notices for recommended replacements if available.