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MAXIM INTEGRATED MAX31825 1-Wire Temperature Sensor | New Product Brief

August 23, 2020 by Mouser Electronics

This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.

MAXIM INTEGRATED MAX31825 1-Wire Temperature Sensor

Maxim Integrated’s MAX31825 1-Wire® Temperature Sensor provide accurate temperature measurements and a flexible functionality in a compact package. 

The sensor provides 8-bit to 12-bit temperature measurements from -45°C to +145°C with better than ±1.75°C accuracy, and better than ±1°C from 0°C to +70°C. Temperature measurements are sent to the host using the 1-Wire interface, which requires only one data line that can also be used to parasitically power the sensor. Each sensor has a unique 64-bit serial code to allow multiple sensors on the same 1-Wire bus, and two address pins provide 64 addresses to identify the senor’s location on a board with multiple MAX31825 sensors. 

The MAX31825 also offers an alarm output with user-definable settings and is housed in a 6-bump wafer-level package. 

  • Measurement range: -45°C to +145°C 
    • Accuracy (-45°C to +145°C): better than ±1.75°C 
    • Accuracy (0°C to +70°C): better than ±1°C 
  • 1-Wire® Interface requires only one data line for communication 
  • Unique 64-bit serial code stored in an on-chip ROM 
    • Allows multiple sensors on the same 1-Wire bus 
  • Two address pins: 64 different addresses using external resistor and pin strapping 
    • Identify sensor’s physical location 
  • Alarm output for temperature fault detection 
    • User definable alarm settings 
  • Package: 6-bump WLP, 1.078mm x 1.348mm 

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