MAX31889
±0.25°C Accurate I2C Temperature Sensor
High-Precision I2C Temperature Sensor on a Battery Power Budget
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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 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
| 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 @1k |
Technical Docs
| Data Sheet | ±0.25°C Accurate I2C Temperature Sensor | May 06, 2020 |
Click any title below to view the detail page where available.
Description
The MAX31889 evaluation system (EV system) provides a single platform to evaluate the MAX31889, a temperature sensor with ±0.3°C accuracy. The EV system consists of two boards connected through headers, a MAX32630FTHR microcontroller board, and the MAX31889 EV kit board. The MAX32630FTHR contains the firmware necessary to use the PC GUI program and also provides power to the MAX31889 EV kit board. The MAX31889 EV kit board ships with jumpers preinstalled to allow quick evaluation of the MAX31889.
View DetailsFeatures
- Easy to Reach Test Points
- Fully Assembled and Tested
- Windows® 7, 8, and 10-Compatible Software
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 @1k |
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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