±0.25°C Accurate I²C Temperature Sensor

Description

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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.

Key Features

• 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 Shutdown 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

Applications/Uses

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