GENERAL DESCRIPTION

The AD7492, AD7492-4, and AD7492-5 are 12-bit high speed, low power, successive approximation ADCs. The parts operate from a single 2.7 V to 5.25 V power supply and feature throughput rates up to 1.25 MSPS. They contain a low noise, wide bandwidth track/hold amplifier that can handle bandwidths up to 10 MHz.

FEATURES

Specified for VDD of 2.7 V to 5.25 V

Throughput rate of 1 MSPS (AD7492)

Throughput rate of 1.25 MSPS (AD7492-5)

Throughput rate of 400 kSPS (AD7492-4)

Low power

4 mW typ at 1 MSPS with 3 V supplies

11 mW typ at 1 MSPS with 5 V supplies

Wide input bandwidth

70 dB typ SNR at 100 kHz input frequency

2.5 V internal reference

On-chip CLK oscillator

Flexible power/throughput rate management

No pipeline delays

High speed parallel interface

Sleep mode: 50 nA typ

24-lead SOIC and TSSOP packages