Texas Instruments TMP451/TMP451-Q1 Remote/Local Temperature Sensors
Texas Instruments TMP451/TMP451-Q1 Remote and Local Temperature Sensors are high-accuracy, low-power remote temperature sensor monitors with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors. They can also be diodes that are integral parts of microprocessors, microcontrollers, or FPGAs. The temperature is represented as a 12-bit digital code for both the local and remote sensors, giving a resolution of 0.0625°C. The temperature accuracy is ±1°C (maximum) in the typical operating range for the local and the remote temperature sensors. The two-wire serial interface accepts the SMBus communication protocol.
Advanced features such as series resistance cancellation, programmable nonideality factor (η-factor), programmable offset, programmable temperature limits, and a programmable digital filter are combined to provide a robust thermal monitoring solution with improved accuracy and noise immunity. The TMP451-Q1 devices from Texas Instruments are AEC-Q100 qualified for automotive applications.
Features
- ±1°C accuracy for local and remote diode sensors
- 0.0625°C resolution for local and remote channels
- 1.7V to 3.6V supply and logic voltage range
- 27µA operating current, 3µA shutdown current
- Series resistance cancellation
- η-Factor and offset correction
- Programmable digital filter
- Diode fault detection
- Two-wire and SMBus™ serial interface
- 8-lead WSON (WDFN) package
Applications
- Processor and FPGA temperature monitoring
- Smartphones and tablets
- Servers, desktops, and notebooks
- Telecom equipment and Storage Area Networks (SANs)
Datasheets
Associated Development Tool
Texas Instruments TMP451EVM Remote Temperature Sensor EVM
Evaluation module that is used to fully evaluate the TMP451, a 1.8V remote temperature sensor.
Functional Block Diagram
Additional Resources
Published: 2015-06-08
| Updated: 2023-10-31