General Description
The MAX11626–MAX11629/MAX11632/MAX11633 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX11632/MAX11633 have 16 input channels; the MAX11628/MAX11629 have 8 input channels; and the MAX11626/MAX11627 have 4 input channels. These six devices operate from either a +3V supply or a +5V supply, and contain a 10MHz SPI™-/QSPI™-/MICROWIRE™-compatible serial port.

Features
♦ Analog Multiplexer with Track/Hold
    16 Channels (MAX11632/MAX11633)
    8 Channels (MAX11628/MAX11629)
    4 Channels (MAX11626/MAX11627)
♦ Single Supply
    2.7V to 3.6V (MAX11627/MAX11629/MAX11633)
    4.75V to 5.25V (MAX11626/MAX11628/MAX11632)
♦ Internal Reference
    2.5V (MAX11627/MAX11629/MAX11633)
    4.096V (MAX11626/MAX11628/MAX11632)
♦ External Reference: 1V to VDD
♦ 16-Entry First-In/First-Out (FIFO)
♦ Scan Mode, Internal Averaging, and Internal Clock
♦ Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing
    Codes Over Temperature
♦ 10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible
    Interface
♦ Small Packages
    16-Pin QSOP (MAX11626–MAX11629)
    24-Pin QSOP (MAX11632/MAX11633)

Applications
    System Supervision
    Data-Acquisition Systems
    Industrial Control Systems
    Patient Monitoring
    Data Logging
    Instrumentation