BU94601KV is an MP3 decoder IC that features USB host and SD card interfaces, audio DAC, system controller, and regulator for internal CORE power supply.
The BU94601KV is a USB audio decoder IC that integrates a USB 2.0 full‑speed host, SD‑card interface, audio DAC, system controller, regulator and LED controller. It supports MP3 decoding (MPEG‑1/2/2.5, Layer 1‑3), FAT file‑system handling, ID3‑TAG analysis and both analog and digital audio outputs.
The document provides absolute maximum ratings, operating conditions, electrical characteristics, pin descriptions, block diagrams and I/O signal specifications. It also outlines terminal functions for stand‑alone and slave modes, as well as test pins for debugging and verification.
| Supply voltage (Analog, I/O) operating range | 3.0 ~ 3.6 V |
|---|---|
| Input voltage VIN range | -0.3 ~ VDD1+0.3 V |
| Storage temperature range | -55 ~ 125 °C |
| Operating temperature range | -40 ~ 85 °C |
| Power dissipation (Ta = 25 °C) | 750 mW |
| Maximum USB I/O current | 80 mA |
| Maximum SD I/O current | 50 mA |
| Audio DAC THD (1 kHz sine) | 0.02 % |
| Audio DAC dynamic range | 88 dB |
| Audio DAC S/N ratio | 96 dB |
The BU94601KV operates with an analog/I‑O supply voltage (VDD1) of 3.0 V to 3.6 V.
The maximum power dissipation is 750 mW when the ambient temperature is 25 °C.
The device can be stored from –55 °C to 125 °C and operated from –40 °C to 85 °C.