General Description

The MAX144/MAX145 low-power, 12-bit analog-to-digital converters (ADCs) are available in 8-pin μMAX? and DIP packages. Both devices operate with a single +2.7V to +5.25V supply and feature a 7.4μs successive-approximation ADC, automatic power-down, fast wake-up (2.5μs), an on-chip clock, and a high-speed, 3-wire serial interface.

特性 Features

? Single-Supply Operation (+2.7V to +5.25V)

? Two Single-Ended Channels (MAX144) One

Pseudo-Differential Channel (MAX145)

? Low Power

0.9mA (108ksps, +3V Supply)

100μA (10ksps, +3V Supply)

10μA (1ksps, +3V Supply)

0.2μA (Power-Down Mode)

? Internal Track/Hold

? 108ksps Sampling Rate

? SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial

Interface

? Space-Saving 8-Pin μMAX Package

? Pin-Compatible 10-Bit Versions Available

Applications

Battery-Powered Systems

Portable Data Logging

Isolated Data Acquisition

Process-Control Monitoring

Instrumentation

Test Equipment

Medical Instruments

System Supervision