Maxim Integrated MAX31889 I2C Temperature Sensor

Maxim Integrated MAX31889 I2C Temperature Sensor

Maxim Integrated MAX31889 I2C Temperature Sensor provides ±0.25°C accuracy from -20°C to +105°C and ±0.65°C accuracy from -40°C to +125°C. The MAX31889 operates from a 1.7V to 3.6V supply voltage and uses a standard I2C serial interface to communicate with a host controller. Two GPIO pins are available. GPIO1 can be configured to trigger a temperature conversion, while GPIO0 can be configured to generate an interrupt for selectable status bits.

The MAX31889 includes a 32-word FIFO for the temperature data and also includes high and low threshold digital temperature alarms. The device is available in a 2mm x 2mm x 0.8mm, 6-pin, µDFN package.


  • High accuracy and precision
    • ±0.25°C accuracy from -20°C to +105°C
    • ±0.65°C accuracy from -40°C to +125°C
  • Low power for long battery life
    • 7V to 3.6V operating voltage
    • 68μA operating current during measurement
    • 55μA standby current
  • Safety and compliance
    • High and low-temperature alarms
  • I2C digital interface
    • Configurable convert temperature input pin
    • Configurable interrupt output pin
    • 32-word FIFO for temperature data
    • 4 I2C addresses are available
    • Unique ROM IDs allow the device to be NIST traceable
  • Small size
    • 2mm x 2mm x 0.8mm, 6-pin μDFN

Block Diagram

Application  Circuit

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