Overview

Features and Benefits

  • High Accuracy
    • ±0.25°C Accuracy from -20°C to +105°C
    • ±0.65°C Accuracy from -40°C to +125°C 
  • Long Battery Life
    • 1.7V to 3.6V Operating Voltage
    • 68µA Operating Current During Measurement
    • 0.55µA Standby Current
  • Small Size
    • 2mm x 2mm x 0.8mm, 6-Pin µDFN
  • 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 Available—More Addresses Available by Request
    • Unique ROM IDs Allow Device to Be NIST Traceable

Product Details

The MAX31889 operates from a 1.7V to 3.6V supply voltage, and is a low-power, high-accuracy digital temperature sensor with ±0.25°C accuracy from -20°C to +105°C and ± 0.65°C accuracy from -40°C to +125°C. The MAX31889 has 16-bit resolution (0.005°C).

The device 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 converison, 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.

Applications

  • Internet of Things (IoT) Sensors
  • Precision Temperature Monitoring
  • RTD Replacement

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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PCN-PDN Information

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.