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)

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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

■

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

■

Key Specifications

■

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

+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)

±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

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