BU9438KV-E2

Overview

The BU9438KV-E2 is an audio codec manufactured by ROHM Semiconductor, classified as a USB host MP3 decoder. It features a QFP-64 surface-mount package and supports USB interface connectivity. The component operates within a supply voltage range of 3 V to 3.6 V and functions reliably across an industrial temperature range from -40°C to +85°C. It includes one digital-to-analog converter (DAC) and zero analog-to-digital converters (ADC). The device draws a typical operating current of 24 mA and is subject to moisture sensitivity classification.

Feature Summary

• Integrates USB host functionality with MP3 decoding capabilities for audio processing.
• Utilizes a QFP-64 surface-mount package designed for compact electronic assemblies.
• Operates on a single low-voltage power supply ranging from 3 V to 3.6 V.

Applications

• USB-based audio playback systems
• MP3 decoder implementations
• Portable audio devices requiring integrated decoding

Procurement Notes

This component is officially designated as End-of-Life (EOL) by the manufacturer. Production has ceased, and it is no longer available for new design introductions. Verification of availability should focus on existing stock or secondary market sources rather than direct manufacturing orders. Engineers must confirm the final discontinuation status through official ROHM notifications before proceeding with any procurement activities.

Selection Notes

Designers should consider this part only for maintenance or legacy system repairs due to its discontinued status. New projects require selecting alternative active components from the manufacturer's current portfolio that offer similar USB host and MP3 decoding interfaces. Ensure that replacement parts maintain compatibility with the QFP-64 form factor or accommodate necessary PCB layout modifications.

Part Context

The BU9438KV-E2 belongs to the BU94xx series of audio codecs from ROHM Semiconductor. This series focuses on integrating audio decoding functions with digital interfaces. The specific model targets applications requiring standalone MP3 playback via USB connectivity without external microcontrollers for basic decoding tasks.

Replacement Considerations

BU9428KV-E2

FAQ

What is the operational status of the BU9438KV-E2?

The component is in the End-of-Life (EOL) state, meaning production has stopped and it is not recommended for new designs.

Does the BU9438KV-E2 include an ADC?

No, the datasheet specifications indicate it contains 1 DAC and 0 ADCs.

What is the maximum operating temperature for this device?

The maximum operating temperature is +85°C.