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    LMP90100MHX/NOPB

    The LMP90xxx is a highly integrated, multichannel,
    low-power, 24-bit Sensor AFEs. The devices features
    a precision, 24-bit Sigma-Delta analog-to-digital
    converter (ADC) with a low-noise programmable gain
    amplifier and a fully differential high-impedance
    analog input multiplexer. A true continuous
    background calibration feature allows calibration at all
    gains and output data rates without interrupting the
    signal path. The background calibration feature
    essentially eliminates gain and offset errors across
    temperature and time, providing measurement
    accuracy without sacrificing speed and power
    consumption.

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      SPECIFICATION

      • 24-Bit, Low-Power Sigma-Delta ADC
      • True Continuous Background Calibration at all
      Gains
      • In-Place System Calibration Using Expected
      Value Programming
      • Low-Noise Programmable Gain (1x to 128x)
      • Continuous Background Open / Short and Out-ofRange Sensor Diagnostics
      • 8 Output Data Rates (ODR) With Single-Cycle
      Settling
      • 2 Matched Excitation Current Sources From 100
      µA to 1000 µA (LMP90100/LMP90098)
      • 4-DIFF / 7-SE Inputs (LMP90100/LMP90099)
      • 2-DIFF / 4-SE Inputs (LMP90098/LMP90097)
      • 7 General-Purpose Input/Output Pins
      • Chopper-Stabilized Buffer for Low Offset
      • SPI 4/3-wire With CRC Data Link Error Detection
      • 50-Hz to 60-Hz Line Rejection at ODR
      ≤13.42 SPS
      • Independent Gain and ODR Selection per
      Channel
      • Supported by WEBENCH® Sensor AFE Designer
      • Automatic Channel Sequencer
      • Key Specifications
      – ENOB/NFR Up to 21.5/19 Bits
      – Offset Error (Typical) 8.4 nV
      – Gain Error (Typical) 7 ppm
      – Total Noise < 10 µV-rms
      – Integral Nonlinearity (INL Maximum) ± 15 ppm
      of FSR
      – Output Data Rates (ODR) 1.6775 – 214.65
      SPS
      – Analog Voltage, VA 2.85 to 5.5 V
      – Operating Temp Range –40°C to 125°C
      – 28-Pin HTSSOP Exposed Pad