MAX40109

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. The digital I²C interface can also be used to retrieve the digital output data and generate alarms.

The MAX40109 operates from 3V to 36V, is available inthe thin quad flat no-lead (TQFN) package and waferlevel package (WLP). It is specified over the -40°C to+125°C operating temperature range.

Applications

• Pressure Sensors
• Strain Gauges
• Force Sensors
• Temperature Sensors
• Wheatstone-Bridge