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Texas Instruments TMP4718 Remote & Local Temperature Sensors

Texas Instruments TMP4718 High-Accuracy Remote and Local Temperature Sensors offer 1°C accuracy with one local integrated sensor and a remote temperature sensor input. The input can be connected to a diode-connected transistor, such as the MMBT3904 NPN transistor, to replace traditional thermistors or thermocouples. The remote input can also be connected to a substrate thermal transistor or diode incorporated inside microprocessors, microcontrollers, or FPGAs to monitor the die temperature.

The TI TMP4718A and TMP4718B present the same function but different SMBus or I²C device addresses, allowing the system to support two sensors on the same bus.

Features

1.62V to 5.5V supply range
-40°C to 125°C wide operating range
1°C remote channel accuracy and 0.125°C resolution
1°C local channel accuracy and resolution
Support I²C and SMBus interface
Low power consumption
Remote diode fault detection

Programmable digital filter
Series resistance cancellation
Programmable ALERT and T_CRIT limits – fault queue for debounce
Adjustable default power-up limits (high temperature) for ALERT and T_CRIT
1.2V logic compatible input thresholds independent of supply

Applications

Standard notebook PC
Rack server motherboard
Smart Network Interface Card (NIC)
Small cell base station

Baseband Unit (BBU)
Software-defined radio
FPGA temperature monitoring

Texas Instruments TMP4718 Remote & Local Temperature Sensors

Features

Applications

Simplified Block Diagram

Functional Block Diagram

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