TMP468AIRGTR

1 Features

• 8-Channel Remote Diode Temperature Sensor

Accuracy: ±0.75°C • Local Temperature Sensor Accuracy: ±0.35°C 

• Temperature Resolution: 0.0625°C 

• Supply and Logic Voltage Range: 1.7 V to 3.6 V 

• 67-µA Operating Current (1 SPS, All Channels Active)

• 0.3-µA Shutdown Current

• Remote Diode: Series Resistance Cancellation, η-Factor Correction, Offset Correction, and DiodeFault Detection

• Register Lock Function Secures Key Registers

• I2C- or SMBus™-Compatible Two-Wire Interface With Pin-Programmable Address

• 16-Bump DSBGA Package

2 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

3 Description

The TMP468 device is a multi-zone, high-accuracy, low-power temperature sensor using a 2-wire, SMBus- or I2C-compatible interface. Up to eight remote diode-connected temperature zones can be monitored simultaneously in addition to the local temperature. Aggregating the temperature measurements across a system allow improved performance through tighter guard bands and can also reduce board complexity. A typical use case is for monitoring the temperature across different processors, such as MCUs, GPUs, and FPGAs in complex systems such as servers and telecommunications equipment.

Advanced features such as series resistance cancellation, programmable non-ideality factor, programmable offset, and programmable temperature limits are included to provide a robust thermal monitoring solution with improved accuracy and noise immunity.

Each of the 8 remote channels (and the local channel) can be programmed independently with two thresholds which trigger when the corresponding temperature is exceeded at the measured location. In addition, there is a programmable hysteresis setting to avoid constant toggling of the threshold.

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