MAX31889
±0.25°C Accurate I2C Temperature Sensor
High-Precision I2C Temperature Sensor on a Battery Power Budget
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Key Features
Applications/Uses
| Sensor Type | Local |
| Interface | I2C |
| Functions | High Precision Temperature Sensor |
| Accuracy (±°C) | 0.25 |
| Parasite Pwr. | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | UDFN/6 |
| Budgetary Price (See Notes) | 1.65 |
Simplified Block Diagram
Technical Docs
| Data Sheet | ±0.25°C Accurate I2C Temperature Sensor | May 06, 2020 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
| Sensor Type | Local |
| Interface | I2C |
| Functions | High Precision Temperature Sensor |
| Accuracy (±°C) | 0.25 |
| Parasite Pwr. | No |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | UDFN/6 |
| Budgetary Price (See Notes) | 1.65 |
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 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
Applications/Uses
- Internet of Things (IoT) Sensors
- Precision Temperature Monitoring
- RTD Replacement
Description
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.
Technical Docs
| Data Sheet | ±0.25°C Accurate I2C Temperature Sensor | May 06, 2020 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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