1 Features

• High accuracy

– TMP126:

• ±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

– TMP126N:

• ±0.8°C (maximum) from –40°C to 150°C

• Fast measurement intervals with no self-heating

concerns

• Operating temperature range:

– TMP126: –55°C to 175°C

– TMP126N: –40°C to 150°C

• 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

• Wireless communication equipment

• Field transmitters

• Medical equipment

• Grid infrastructure

• Building and factory automation

• Servo drives

• Avionics

• Lasers

3 Description

The TMP126 is a 0.25°C accuracy digital temperature

that supports an ambient temperature range of –55°C

to 175°C. The TMP126 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 is

designed for a wide range of applications.

The TMP126 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.