BU94605AKV-E2

Overview

The BU94605AKV-E2 is an audio codec and MP3 decoder LSI manufactured by ROHM Semiconductor. It supports AAC, WMA, and MP3 decoding formats with a 24-bit resolution. The device integrates a single DAC and utilizes I2C, SPI, and USB interfaces for communication. It operates within a supply voltage range of 3 V to 3.6 V and functions at temperatures between -40°C and +85°C. Key performance metrics include a signal-to-noise ratio of 96 dB and a total harmonic distortion plus noise of 0.005%. The component is housed in a VQFP-80 package.

Feature Summary

• Integrated support for multiple audio decoding standards including AAC, WMA, and MP3.
• High-fidelity audio output capabilities with low distortion characteristics.
• Flexible connectivity options through USB host functionality alongside standard digital interfaces.

Applications

• Portable media players requiring integrated decoding and playback
• USB-based audio peripherals and dongles
• Consumer electronics with limited space for dedicated codec chips

Procurement Notes

Verify the current lifecycle status before integration, as this specific part number may be discontinued or subject to last-time buy restrictions. Confirm that the VQFP-80 package dimensions align with your PCB footprint design. Ensure compatibility with the required USB host controller logic if utilizing the built-in USB interface features for data transfer.

Selection Notes

Select this component when a combined decoding and codec solution is required to reduce bill of materials count. Compare against the BU94601KV-E2 if lower bit depth is acceptable, or consider the BU94604KV-E2 for different pin configurations. Validate that the 3V to 3.6V operating voltage matches your system power rails and that the thermal dissipation requirements fit the enclosure constraints.

Part Context

This device belongs to the BU94605AKV series of audio CODECs designed for compact multimedia applications. It consolidates decoding and analog output stages into a single chip, reducing board space compared to discrete solutions. The series targets portable devices where power efficiency and audio quality are critical design parameters.

Replacement Considerations

Check for direct substitutes within the BU94605 family or cross-reference with the BU94604KV-E2 for similar form factors. Verify functional equivalence regarding supported audio codecs and interface protocols before swapping components in existing designs.