Analog Devices Inc. AD73311LARSZ

Description
The AD73311L is a front-end processor for general-purpose applications, including speech and telephony. It features a 16-bit A/D conversion channel and a 16-bit D/A conversion channel, each providing 70 dB signal-to-noise ratio over a voiceband signal bandwidth. The AD73311L is suitable for various applications in speech and telephony, including low bit rate, high-quality compression, speech enhancement, recognition, and synthesis. It is also suitable for single or multichannel active control applications due to its low group delay characteristic. The gains of the A/D and D/A conversion channels are programmable over 38 dB and 21 dB ranges, respectively. An on-chip reference voltage allows single supply operation. A serial port (SPORT) enables easy interfacing of single or cascaded devices to industry-standard DSP engines. The AD73311L is available in 20-lead SOIC, SSOP, and TSSOP packages.

Features
16-bit A/D converter
16-bit D/A converter
Programmable input/output sample rates
76 dB ADC SNR
77 dB DAC SNR
Programmable sampling rate
64 kS/s maximum sample rate
-90 dB crosstalk
Low group delay (25 ms typ per ADC channel, 50 ms typ per DAC channel)
Programmable input/output gain
Flexible serial port allowing up to eight devices to be connected in cascade
Single ( 3 V) supply operation
33 mW max power consumption at 2.7 V
On-chip reference
20-lead SOIC/SSOP/TSSOP packages

Applications
General-purpose analog I/O
Speech processing
Cordless and personal communications
Telephony
Active control of sound and vibration
Data communications
Low cost, low power CMOS
General-purpose analog front end