Automotive, ±0.4°C accurate I²C temperature sensor with alert option

The TMP112-Q1 and TMP112D-Q1 devices are digital

temperature sensors designed for NTC/PTC thermistor replacement where high accuracy

is required. These devices offer an accuracy of ±0.4°C/±0.5°C without requiring

calibration or external component signal conditioning. TMP112-Q1 and TMP112D-Q1 are

highly linear and do not require complex calculations or lookup tables to derive the

temperature. The calibrating for improved accuracy feature in TMP112-Q1 (see the

Calibrating for Improved Accuracy section) allows users

to calibrate for an accuracy as good as ±0.17°C. The on-chip 12-bit ADC offers

resolutions down to 0.0625°C.

TMP112-Q1 and TMP112D-Q1 come with 0.8mm × 0.8mm

X2SON (DPW) and 1.6mm × 1.6mm SOT563 (DRL) packages. These devices feature SMBus™, two-wire and I2C interface compatibility, and allow up

to four devices on one bus along with SMBus alert function. These devices are

specified to operate over 1.4V to 3.6V supply voltage. The maximum quiescent current

is around 10µA over the full operating range.