1 Features
• AEC-Q100 qualified for automotive applications:
– TMP112-Q1/TMP112D-Q1: –40°C to 125°C
– Device HBM ESD classification level 2
– Device CDM ESD classification level C6
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• TMP112-Q1 Accuracy without calibration:
– ±0.5°C (Max) over 0°C to 65°C
– ±1°C (Max) over –40°C to 125°C
• TMP112D-Q1 Accuracy without calibration:
– ±0.4°C (Max) over 0°C to 65°C
– ±0.5°C (Max) over -25°C to 85°C
– ±0.7°C (Max) over –40°C to 125°C
• Low quiescent current:
– TMP112-Q1: 10μA active (Max), 1μA shutdown
(Max)
– TMP112D-Q1: 9μA active (Max), 0.35μA
shutdown (Max)
• Available packages:
– SOT563 package (1.6mm × 1.6mm)
– X2SON package (0.8mm × 0.8mm)
• Supply range: 1.4V to 3.6V
• Resolution: 12 bits
• Digital output: SMBus, two-wire and I2C interface
compatibility

2 Applications
• Automotive
• Infotainment & cluster
• Head unit & digital cockpit
• In-cabin sensing
• Battery management unit
• Vehicle control unit (VCU)
• Surround view system ECU

3 Description
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.