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MAX40109 - Precision Signal Conditioning AFE

General Description

The MAX40109 is a low-power, precision sensor interface SoC that includes a high-precision, programmable Analog frontend (AFE), Analog-to-Digital Converter (ADC), calibration memory, and digital signal processing.

Key Features

  • Analog Front-End to Interface with Resistive Bridge-Based Pressure Sensors.
  • Temperature Measurement either directly from the Resistive Bridge or from an External Thermistor.
  • Analog Zero-Pressure Offset Compensation.
  • High-Precision PGA Front-End with 20 Gain Options.
  • Analog and Digital Outputs.
  • Digital 1-Wire, Power Line Communication (PLC) and I2C interfaces.
  • Calibration Memory with Third-Order Polynomial for Compensation from Tempe.

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Precision Signal Conditioning AFE for Pressure Sensor Applications MAX40109 General Description The MAX40109 is a low-power, precision sensor interface SoC that includes a high-precision, programmable Analog frontend (AFE), Analog-to-Digital Converter (ADC), calibration memory, and digital signal processing. It also includes a Digital-to-Analog Converter (DAC) with an output buffer to support analog voltage output and a 4mA–20mA current loop. It is designed for sensor applications such as strain gauges, pressure, force, and temperature. This Sensor AFE has both analog and digital outputs. The digital 1-Wire/I2C interfaces program the calibration memory, the front-end Programmable gain amplifier (PGA)'s gain, and the internal current source that drives the sensors' bridge.