GENERAL DESCRIPTION

The AD7466/AD7467/AD7468 are 12-/10-/8-bit, high speed, low power, successive approximation analog-to-digital converters (ADCs), respectively. The parts operate from a single1.6 V to 3.6 V power supply and feature throughput rates up to 200 kSPS with low power dissipation. The parts contain a low noise, wide bandwidth track-and-hold amplifier, which can handle input frequencies in excess of 3 MHz. The conversion process and data acquisition are controlled using CSand the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS, and the conversion is also initiated at this point. There are no pipeline delays associated with the part.

FEATURES

Specified for VDD of 1.6 V to 3.6 V

Low power:

0.62 mW typical at 100 kSPS with 3 V supplies

0.48 mW typical at 50 kSPS with 3.6 V supplies

0.12 mW typical at 100 kSPS with 1.6 V supplies

Fast throughput rate: 200 kSPS

Wide input bandwidth:

71 dB SNR at 30 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface:

SPI/QSPI™/MICROWIRE™/DSP compatible

Automatic power-down

Power-down mode: 8 nA typical

6-lead SOT-23 package

8-lead MSOP package

APPLICATIONS

Battery-powered systems

Medical instruments

Remote data acquisition

Isolated data acquisition

AD7466

VDD= 1.6 V to 3.6 V, fSCLK= 3.4 MHz, fSAMPLE= 100 kSPS, unless otherwise noted. TA= TMINto TMAX, unless otherwise noted.

The temperature range for the B version is −40°C to +85°C.

AD7467

VDD= 1.6 V to 3.6 V, fSCLK= 3.4 MHz, fSAMPLE= 100 kSPS, unless otherwise noted. TA= TMINto TMAX, unless otherwise noted.

The temperature range for the B version is −40°C to +85°C.

AD7468

VDD= 1.6 V to 3.6 V, fSCLK= 3.4 MHz, fSAMPLE= 100 kSPS, unless otherwise noted. TA= TMINto TMAX, unless otherwise noted.

The temperature range for the B version is −40°C to +85°C.