2CH A/D Converter with USB I/F
General Description
The 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