BU94603KV is AAC+WMA+MP3 decoder IC which contains USB host and SD card I/F, audio DAC, system controller, regulator for internal CORE power supply.
The BU94603KV is an audio decoder IC that integrates a USB 2.0 full‑speed host, SD‑card interface, audio DAC, system controller, and internal power regulator. It supports AAC, WMA, and MP3 decoding, FAT file‑system analysis, and offers both analog and digital audio outputs.
The document lists absolute maximum ratings, operating conditions, electrical characteristics, pin functions, and signal specifications. It also includes a block diagram, terminal equivalents, and application notes for typical audio product designs.
| Analog/I‑O supply voltage (max) | -0.3 V to 4.5 V |
|---|---|
| Analog/I‑O supply voltage (operating) | 3.0 V to 3.6 V |
| Power dissipation | 750 mW |
| Operating temperature range | -40 °C to 85 °C |
| Total harmonic distortion (THD) | 0.02 % |
| Package | VQFP64, 0.5 mm pitch |
It can decode MP3, WMA, and AAC audio files.
The maximum analog/I‑O supply voltage is 4.5 V.
The IC is supplied in a VQFP64 package with a 0.5 mm pitch.
The device can dissipate up to 750 mW.