1 Features

• AEC-Q100 qualified for automotive applications

– Device temperature grade-0: –55°C to 175°C

ambient operating temperature

– Device HBM classification level 2

– Device CDM classification level C2b

• Function Safety Capable

– Documentation available to aid functional safety

system design

• High accuracy

– ±0.25°C (maximum) from 20°C to 30°C

– ±0.3°C (maximum) from –20°C to 85°C

– ±0.4°C (maximum) from –40°C to 125°C

– ±0.5°C (maximum) from –55°C to 150°C

– ±0.75°C (maximum) from 150°C to 175°C

• Fast measurement intervals with no self-heating

concerns

• Supply range: 1.62 V to 5.5 V

• Factory-calibrated

– NIST traceability

• Low power consumption

• Programmable temperature alert limits

• Temperature slew rate warning

• Optional Cyclic Redundancy Check (CRC)

• 3-wire SPI interface

2 Applications

• Transmission Control Units

• On-board Chargers (OBC)

• Brake Systems

• Traction Inverters

• Vehicle Control Units (VCU)

• DC/DC Converters

• Power Distribution Units (PDU)

• Powertrain Exhaust Sensors

3 Description

The TMP126-Q1 is a 0.25°C accuracy digital

temperature that supports an ambient temperature

range of –55°C to 175°C. The TMP126-Q1 features

a 14-bit signed temperature resolution (0.03125°C per

LSB) while operating over a supply range of 1.62

V to 5.5 V. With a fast conversion rate, low supply

current, and a simple 3-wire SPI compatible interface,

the TMP126-Q1 is designed for a wide range of

applications.

The TMP126-Q1 includes additional advanced

features for increased reliability in harsh environments

such as optional CRC checksum for data integrity,

programmable alert limits, a temperature slew rate

warning, and an enhanced operational temperature

range. The device utilizes a NIST traceable factory

calibration for guaranteed accuracy and comes in

a small SOT package for close placement to heat

sources along with fast response times.