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.