AD73311L

低成本，低功耗CMOS通用模拟前端 Low Cost, Low Power CMOS General Purpose Analog Front End

GENERAL DESCRIPTION

The is a complete 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 channel provides 70 dB signal-to-noise ratio over a voiceband signal bandwidth. The final channel bandwidth can be reduced, and signal-to-noise ratio improved, by external

digital filtering in a DSP engine.

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