AK5371

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


Pinout




Specifications

Parameter	Symbol	Min	Max	Units
Power Supplies
Analog Digital |DGND-AGND|	VA VD GND	-0.3 -0.3	4.5 4.5 0.3	V V V
Input Current (any pins except for supplies)	IIN	-	±10	mA
Analog Input Voltage	VINA	-0.3	VA+0.3	V
Digital Input Voltage	VIND	-0.3	VD+0.3	V
Ambient Temperature	Ta	0	70	°C
Storage Temperature	Tstg	-40	125	°C

Description

The AK5371 is stereo A/D converter with USB I/F. The product integrates USB serial interface engine, USB transceiver, audio class processing unit, endpoints, and high quality 2 channel AD converter into the chip.As the product incorporates PLL, it can support several sampling frequencies, 8kHz, 11.025kHz, 22.05kHz, 44.1kHz, and 48kHz with only one crystal. Moreover, the AK5371 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 1A.The AK5371 includes 20dB fixed gain pre-amplifier. In addition to this, as the product also incorporates IPGA which can amplify the microphone signal up to +24dB, total gain is 44dB maximum.
The AK5371 has EEPROM I/F for customizing Device Descriptor and String Descriptor. By connecting 1K bit, 2K bit, or 4Kbit MicrowireTM type EEPROM, the AK5371 can customize Vendor ID, Product ID in Device Descriptor, and String Descriptor.This device is good for not only business application such as conferencing but also games, voice recognition, and Karaoke.