GENERAL DESCRIPTION

The AD73460 is a six-input channel analog front end processor for general-purpose applications including industrial power metering or multichannel analog inputs. It features six 16-bit A/D conversion channels, each of which provides 72 dB signal-to-noise ratio over a dc-to-2 kHz signal bandwidth. Each channel also features a programmable input gain amplifier (PGA) with gain settings in eight stages from 0 dB to 38 dB.

FEATURES

AFE PERFORMANCE

6 16-Bit A/D Converters

Programmable Input Sample Rate

Simultaneous Sampling

72 dB SNR

64 kS/s Maximum Sample Rate

–80 dB Crosstalk

Low Group Delay (25
s Typ per ADC Channel)

Programmable Input Gain

Single Supply Operation

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