GENERAL DESCRIPTION

The AD73422 is a single device incorporating a dual analog front end and a microcomputer optimized for digital signal processing (DSP) and other high speed numeric processing applications.

FEATURES

AFE PERFORMANCE

Two 16-Bit A/D Converters

Two 16-Bit D/A Converters

Programmable Input/Output Sample Rates

78 dB ADC SNR

77 dB DAC SNR

64 kS/s Maximum Sample Rate

–90 dB Crosstalk

Low Group Delay (25
s Typ per ADC Channel, 50
s Typ per DAC Channel)

Programmable Input/Output Gain

On-Chip Reference

DSP PERFORMANCE

19 ns Instruction Cycle Time @ 3.3 V, 52 MIPS Sustained Performance

Single-Cycle Instruction Execution

Single-Cycle Context Switch

3-Bus Architecture Allows Dual Operand Fetches in Every Instruction Cycle

Multifunction Instructions

Power-Down Mode Featuring Low CMOS Standby Power Dissipation with 400 Cycle Recovery from Power-Down Condition

Low Power Dissipation in Idle Mode