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AD74322 Datasheet Low Cost/ Low Power Stereo Audio Analog Front End

Manufacturer: Analog Devices

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General Description

CDIN CDOUT CCLK CLATCH Low Cost, Low Power Stereo Audio Analog Front End AD74322 FUNCTIONALBLOCKDIAGRAM DVDD1(EXT) DVDD2(INT) CLKIN AVDD VIN1P ADC SPI Port Control Block ADC CHANNEL 2 CHANNEL 1 VIN1N VIN2P VIN2N ASDATA/SDO DSDATA/SDI Y R A N L I M A I C L I E HN R P EC TA T DA LRCLK/SDIFS DAC CHANNEL 1 VOUT1P I2S Port VOUT1N SDOFS Reference DAC CHANNEL 2 VOUT2P BCLK/SCLK VOUT2N DGND REFCAP AGND DVDD1(EXT) DVDD2(INT) CLKIN AVDD CDIN ADC Control Block ADC CHANNEL 2 VIN2 CDOUT CCLK SPI CHANNEL 1 VIN1 Port CLATCH ASDATA DSDATA DAC CHANNEL 1 VOUT1 LRCLK I2S Port Reference BCLK DAC CHANNEL 2 VOUT2 DGND REFCAP AGND The AD74322 is a front-end processor for general purpose audio and voice applications.

It

Overview

= Preliminary Technical Data.

Key Features

  • 2.5V Stereo Audio Codec with 3.3 V Tolerant Digital Interface Supports 96 kHz Sample Rates Supports 16/18 /20/24-Bit Word Lengths Multibit Sigma Delta Modulators with “Perfect Differential Linearity Restoration” for Reduced Idle Tones and Noise Floor Data Directed Scrambling DACs - Least Sensitive to Jitter Performance (20 Hz to 20 kHz) 90 dB ADC and DAC SNR Digitally Programmable Input/Output Gain On-chip Volume Controls Per Output Channel Hardware and Software Controllable Clickless Mute Suppo.

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