1FEATURES
2• LM95172EWG is AEC-Q100 Grade 0 Qualified
and is Manufactured on an Automotive Grade
Flow.
• 13-Bit (0.0625°C LSB) to 16-Bit (0.0078125°C
LSB) Temperature Resolution
• Wide −40°C to +200°C Temperature Range
• 35 ms Best Conversion Time Tracks Fast
Temp Changes
• OVERTEMP Digital Output Switches
when TDIE > THIGH
• Shutdown Mode Saves Power yet Wakes up
for One-Shot Temperature Update
• SPI and MICROWIRE Bus Interface
• 10-Pin Cerpack High-Temperature Ceramic
Package

APPLICATIONS
• Automotive High Temperature Applications
• Industrial Power Controllers
• Industrial Motors, Gear Boxes
• Geothermal Instrumentation
• High Temperature Test Equipment

KEY SPECIFICATIONS
• Analog and Digital Supply Voltage 3.0V to 5.5V
• Total Supply Current Operating 400 μA
(typ)
– Shutdown −40°C to +140°C 4 μA (max)
– Shutdown −40°C to +175°C 12 μA (max)
– Shutdown −40°C to +200°C 28 μA (max)
• Temperature Accuracy
– +175°C to +200°C ±3.0°C (max)
– +130°C to +160°C ±1.0°C (max)
– +120°C to +130°C ±2.0°C (max)
– +160°C to +175°C ±2.0°C (max)
– −40°C to +120°C ±3.5°C (max)
• Temperature Resolution
– 13-bit mode 0.0625°C/LSB
– 16-bit mode 0.0078125°C/LSB
• Conversion Time
– 13-bit mode 43 ms (max)
– 16-bit mode 350 ms (max)

DESCRIPTION
The LM95172EWG is an integrated digital-output
temperature sensor with a Serial Peripheral Interface
(SPI) and MICROWIRE™-compatible interface in a
10-pin Cerpack high temperature ceramic package. It
features a very linear Sigma-Delta Analog-to-Digital
Converter (ADC), high accuracy, fast conversion
rates, and extremely low output noise. With an
operating temperature as low as -40°C and optimized
accuracy from 120°C to 200°C, it is ideal for high-
temperature applications.
The over-temperature alarm output (OVERTEMP)
asserts when the die temperature exceeds a
programmed THIGH limit. The user-programmed TLOW
limit creates a temperature-stabilizing hysteresis
when the ambient temperature is near the trip point.
The LM95172EWG can be programmed to operate
from 13 bits (0.0625°C per LSB) to 16 bits
(0.0078125°C per LSB) resolution. The
LM95172EWG powers up in 35 ms, the fastest
conversion time, with temperature output set at 13-bit
resolution. The resolution may then be changed to
14-, 15- or 16-bits. When in the 13-, 14- or 15-bit
resolution mode, the least significant bit in the 16-bit
temperature register toggles after the completion of
each conversion. This bit may be monitored to verify
that the conversion is complete.
The high noise immunity of the Serial I/O (SI/O)
output makes the LM95172EWG ideal for use in
challenging electromagnetic environments.