Analog Devices Inc. AD73322LARUZ-REEL

Description
The AD73322 is a dual analog front-end processor designed for general-purpose applications, including speech and telephony. It features two 16-bit A/D conversion channels and two 16-bit D/A conversion channels, each providing high signal-to-noise ratios (78 dB for ADC and 77 dB for DAC) over a voiceband signal bandwidth.
The AD73322 incorporates an input-to-output gain network in both analog and digital domains, allowing for impedance matching and scaling when interfacing with Subscriber Line Interface Circuits (SLICs). It is suitable for various applications in speech and telephony, such as low bit rate compression, speech enhancement, recognition, and synthesis.
The low group delay characteristic of the AD73322 makes it ideal for single or multichannel active control applications. It operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming only 73 mW of power at 3.0 V. The device includes an on-chip reference voltage for single-supply operation, programmable to accommodate either 3 V or 5 V.

Features
Two 16-bit A/D converters
Two 16-bit D/A converters
Programmable input/output sample rates (64 kHz, 32 kHz, 16 kHz, 8 kHz)
78 dB ADC SNR
77 dB DAC SNR
64 kS/s maximum sample rate
-90 dB crosstalk
Low group delay (25 μs typ per ADC channel, 50 ps typ per DAC channel)
Programmable input/output gain
Flexible serial port for cascading up to four dual codecs
Single ( 2.7 V to 5.5 V) supply operation
73 mW typ power consumption at 3.0 V
On-chip reference
28-lead SOIC and 44-lead LQFP packages

Applications
General-purpose analog I/O
Speech processing
Cordless and personal communications
Telephony
Active control of sound and vibration
Data communications
Wireless local loop