lm95172q National Semiconductor Corporation, lm95172q Datasheet
lm95172q
Manufacturer Part Number
lm95172q
Description
Digital Temperature Sensor In Die Form With ?1?c Accuracy From 130?c To 160?c
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM95172Q.pdf
(24 pages)
© 2009 National Semiconductor Corporation
Digital Temperature Sensor in Die Form with
±1°C Accuracy from 130°C to 160°C
General Description
The LM95172Q is a digital temperature sensor with industry-
leading accuracy at temperatures up to 175°C. It features a
linear Sigma-Delta Analog-to-Digital Converter (ADC) with
fast conversion rates and low output noise. Communication
with the LM95172Q is achieved over an easy-to-use Serial
Peripheral Interface (SPI) with high noise immunity.
The LM95172Q's resolution is user programmable from
0.0625°C to 0.0078125°C. When operating in 13-, 14- or 15-
bit resolution, the LM95172Q indicates a new conversion has
been completed. The LM95172Q also features an over-tem-
perature alarm output (OVERTEMP) that asserts when the
die temperature exceeds a programmed high limit.
The LM95172Q is specified for operation over the wide tem-
perature range of -40°C to 175°C. It is available in die form
which makes the LM95172Q ideal multi-chip modules or cus-
tom packaging to a wide variety of high-temperature applica-
tions.
Applications
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Simplified Block Diagram (Die Form)
MICROWIRE® is a registered trademark of National Semiconductor Corporation.
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
Automotive
Process Monitoring
Harsh-environment temperature monitoring
Custom-package applications
High-Temperature Modules
300357
LM95172Q
Features
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Key Specifications
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AEC-Q100 Grade 0 qualified and is manufactured on an
Automotive Grade Flow.
0.0625°C to 0.0078125°C temperature resolution
Wide −40°C to +175°C temperature range
35 ms conversion time tracks fast temp changes
OVERTEMP digital output switches when T
Shutdown mode saves power yet wakes up for one-shot
temperature update
Analog and Digital Supply Voltage
Total Supply Current
Temperature Accuracy
Temperature Resolution
Conversion Time
Shutdown
Shutdown
+130°C to +160°C
+120°C to +130°C
+160°C to +175°C
−40°C to +140°C
−40°C to +175°C
−40°C to +120°C
13-bit mode
16-bit mode 0.0078125°C/LSB
13-bit mode
16-bit mode
30035701
Operating
February 4, 2009
0.0625°C/LSB
280 ms (max)
±1.0°C (max)
±2.0°C (max)
±2.0°C (max)
±3.5°C (max)
www.national.com
DIE
3.0V to 5.5V
35 ms (max)
400 µA (typ)
12 µA (max)
4 µA (max)
> T
HIGH