Click to expand full text
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.