General Description

The MAX11646/MAX11647 low-power, 10-bit, 1-/2-channel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, a clock, and an I2C-compatible 2-wire serial interface. These devices operate from a single supply of 2.7V to 3.6V (MAX11647) or 4.5V to 5.5V (MAX11646) and require only 6µA at a 1ksps sample rate. AutoShutdown™ powers down the devices between conversions, reducing supply current to less than 1µA at lower throughput rates. The MAX11646/MAX11647 each measure two single-ended or one differential input. The fully differential analog inputs are software configurable for unipolar or bipolar and single-ended or differential operation.

Features

♦ Ultra-Tiny 1.9mm x 2.2mm Wafer Level Package

♦ High-Speed I2C-Compatible Serial Interface

    400kHz Fast Mode

    1.7MHz High-Speed Mode

♦ Single Supply

    2.7V to 3.6V (MAX11647)

    4.5V to 5.5V (MAX11646)

♦ Internal Reference

    2.048V (MAX11647)

    4.096V (MAX11646)

♦ External Reference: 1V to VDD

♦ Internal Clock

♦ 2-Channel Single-Ended or 1-Channel Fully Differential

♦ Internal FIFO with Channel-Scan Mode

♦ Low Power

    670µA at 94.4ksps

    230µA at 40ksps

    60µA at 10ksps

    6µA at 1ksps

    0.5µA in Power-Down Mode

♦ Software-Configurable Unipolar/Bipolar

Applications

    Handheld Portable Applications

    Medical Instruments

    Battery-Powered Test Equipment

    Power-Supply Monitoring

    Solar-Powered Remote Systems

    Received-Signal-Strength Indicators

    System Supervision