Product Summary

The AD73311L is a complete front-end processor for generalpurpose applications including speech and telephony. It featuresa 16-bit A/D conversion channel and a 16-bit D/A conversionchannel. Each channel provides 70 dB signal-to-noise ratio overa voiceband signal bandwidth. The ?nal channel bandwidth canbe reduced, and signal-to-noise ratio improved, by externaldigital ?ltering in a DSP engine.The AD73311L is suitable for a variety of applications in thespeech and telephony area, including low bit rate, high qualitycompression, speech enhancement, recognition and synthesis.The low group delay characteristic of the part makes it suitablefor single or multichannel active control applications.The gains of the A/D and D/A conversion channels are program-mable over 38 dB and 21 dB ranges respectively. An on-chipreference voltage is included to allow single supply operation.A serial port (SPORT) allows easy interfacing of single or cas-caded devices to industry standard DSP engines.The AD73311L is available in 20-lead SOIC, SSOP andTSSOP packages

Parametrics

Specifications of AD73311LARZ
Single Supply Voltage (min) 2.7V Single Supply Voltage (max) 3.3V
Package Type SOIC W Lead Free Status / RoHS Status Compliant

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 Which Allows 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

Diagrams