Analog Devices Inc. AD73322LARZ

Description
The AD73322L 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 78 dB signal-to-noise ratio over a voice-band signal bandwidth. The device also includes an input-to-output gain network in both the analog and digital domains, allowing for impedance matching or scaling when interfacing to subscriber line interface circuits (SLICs).
The AD73322L is suitable for various applications in speech and telephony, including low bit rate, high-quality compression, speech enhancement, recognition, and synthesis. Its low group delay characteristic makes it ideal for single or multichannel active control applications.

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
78 dB DAC SNR
-90 dB crosstalk
Low group delay (25 μs typ per ADC channel, 50 μs typ per DAC channel)
Programmable input/output gain
Flexible serial port (SPORT) for cascading up to 4 dual codecs
Single-supply operation (2.7 V to 3.3 V)
50 mW typ power consumption at 3.0 V
Temperature range: -40°C to 105°C
On-chip reference
28-lead SOIC, TSSOP, 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