General Description

The AK5371A is stereo A/D converter with USB I/F. The AK5371A integrates USB serial interface engine, USB transceiver, audio class processing unit, endpoints, and high quality 2 channel AD converter into the chip.

As the AK5371A incorporates PLL, it can support several sampling frequencies, 8kHz, 11.025kHz, 22.05kHz, 44.1kHz, and 48kHz with only one crystal. Moreover, the AKAK5371A integrates volume control, and mute function.

Not only power consumption at normal operation is very low, but also the current at suspend mode is less than 1μA.

Features:

■ USB-IF Certified

■ Incorporates USB Audio Controller

USB Serial Interface Engine

Audio Class Encoder/Decoder

2 Endpoints (FIFO)

USB transceiver

■ 16 bit A/D Converter

2 channels

Mute/Volume Control

A/D S/N: 84dBA (44.1kHz, Gain = 0dB)

■ Low Power Dissipation

Normal Operation: 26mA

Suspend Mode: < 1uA

■ Programmable Gain Amplifier (IPGA)

+24dB to –31dB @1dB Step

■ 20dB Pre-amplifier

■ On-chip PLL

5 Sampling Frequencies support

8kHz, 11.025kHz

22.05kHz, 44.1kHz, 48kHz

■ EEPROM I/F can customize Device Descriptor, and String Descriptor

■ Single Power Supply, Low Power +3.3±0.3 Volts

■ Package

48pin LQFP