Computer Controls

New Maxim MAX31825

On May 19th 2020, Maxim Integrated officially released MAX31825 for mass production – a 1-Wire Temperature Sensor with ±1°C accuracy.

The MAX31825 temperature sensor provides 8-bit to 12-bit Celsius temperature measurements with accuracy better than ±1°C in the range from 0°C to +70°C, and ±1.75°C the range from -45°C to +145°C. This sensor communicates over a 1-Wire® bus that, by definition, requires only one data line (and ground) for the communication with a microcontroller. In addition, the sensor is able to derive power directly from the data line ("parasite power"), eliminating the need for an external power supply.

Each MAX31825 sensor has a unique 64-bit serial code, which allows multiple MAX31825 ICs to reside on the same 1-Wire bus. In addition, it includes two address input pins that, using an external resistor and pin-strapping, allow one of 64 different addresses to be selected to identify each sensor's physical location. Therefore, it is simple to use one microprocessor to control many devices distributed over a large area.

The MAX31825 is available in a 6-bump WLP package (1.35 x 1.08mm). The power supply voltage range is from 1.6V to 3.6V for external power supplies, and from 2.3V to 3.6V for parasite power. The operating temperature range is from -45°C to +145°C.

Other features

  • Alarm output for detection of temperature faults with user-definable settings
  • Selectable temperature resolution from 8 to 12 bit
  • 4kV HBM ESD Protection for reliable safety and compliance

Target applications

  • Industrial equipment (PLC, Instrumentation)
  • Communications equipment
  • Data center equipment
  • Consumer applications
  • Portable devices
  • Medical

For customer evaluation of MAX31825 product Maxim Integrated offers Evaluation Kit that represent a proven, fully assembled and tested design with on-board DS2482 I2C to 1-Wire converter.


 Get your Datasheet for the new MAX31825 [PDF]


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Download datasheet for MAX31825 [PDF]