General Description

The MAX1110/MAX1111 are low-power, 8-bit, 8-channel analog-to-digital converters (ADCs) that feature an internal track/hold, voltage reference, clock, and serial interface. They operate from a single +2.7V to +5.5V supply and consume only 85µA while sampling at rates up to 50ksps. The MAX1110’s 8 analog inputs and the MAX1111’s 4 analog inputs are software-configurable, allowing unipolar/bipolar and single-ended/differential operation.

Features

♦ +2.7V to +5.5V Single Supply

♦ Low Power: 85µA at 50ksps 6µA at 1ksps

♦ 8-Channel Single-Ended or 4-Channel Differential Inputs (MAX1110)

♦ 4-Channel Single-Ended or 2-Channel Differential Inputs (MAX1111)

♦ Internal Track/Hold; 50kHz Sampling Rate

♦ Internal 2.048V Reference

♦ SPI/QSPI/MICROWIRE-Compatible Serial Interface

♦ Software-Configurable Unipolar or Bipolar Inputs

♦ Total Unadjusted Error: ±1LSB max ±0.3LSB typ

Applications

Portable Data Logging

Hand-Held Measurement Devices

Medical Instruments

System Diagnostics

Solar-Powered Remote Systems

4–20mA-Powered Remote Data-Acquisition Systems