Texas Instruments TMP468 High-Accuracy Temperature Sensor
Texas Instruments TMP468 High-Accuracy Temperature Sensor is a multi-zone, high-accuracy, low-power temperature sensor. The sensor uses a 2-wire, SMBus- or I2C-compatible interface. There are up to eight remote diode-connected temperature zones that can be monitored simultaneously in addition to the local temperature.
Aggregating the temperature measurements across a system allows improved performance through tighter guard bands and reduces board complexity. A typical use case is for monitoring the temperature across different processors like MCUs, GPUs, and FPGAs in complex systems.
These systems include servers and telecommunications equipment. Advanced features like series resistance cancellation, programmable non-ideality factor, programmable offset, and programmable temperature limits are included in the Texas Instruments TMP468 to provide a robust thermal monitoring solution with improved accuracy and noise immunity.
Features
- ±0.75°C 8-channel remote diode temperature sensor accuracy
- ±0.35°C local temperature sensor accuracy
- 0.0625°C temperature resolution
- 1.7V to 3.6V supply and logic voltage range
- 67μA operating current (1SPS, all channels active)
- 0.3μA shutdown current
- Remote diode (series resistance cancellation, η-factor correction, offset correction, and diode fault detection)
- Register lock function secures key registers
- I2C- or SMBus™-compatible two-wire interface with pin-programmable address
- 16-bump DSBGA package
Applications
- MCU, GPU, ASIC, FPGA, DSP, and CPU temperature monitoring
- Telecommunication equipment
- Servers and personal computers
- Cloud Ethernet switches
- Secure data centers
- Highly integrated medical systems
- Precision instruments and test equipment
- LED lighting thermal control
Functional Block Diagram
Related Development Tool
Texas Instruments TMP468EVM Evaluation Module (EVM)
Designed to evaluate the TMP468, a high-accuracy, low-power, 8-channel remote temperature sensor.