The TMP468 device is a
multi-zone, high-accuracy, low-power temperature sensor using a
two-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 allows improved performance through tighter guard
bands and can 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 eight
remote channels (and the local channel) can be programmed independently with two thresholds that
are triggered when the corresponding temperature is exceeded at the measured location. In addition,
there is a programmable hysteresis setting to avoid constant toggling around the threshold.
The TMP468 device
provides high accuracy (0.75°C) and high resolution (0.0625°C) measurement capabilities. The device
supports low voltage rails (1.7 V to 3.6 V), common two-wire interfaces, and is available in a
small, space efficient package (3 mm × 3 mm or 1.6 mm × 1.6 mm) for
easy integration into computing systems. The remote junction supports a temperature range from
–55°C to +150°C.
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