Features • 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 TDIE > THIGH • Shutdown mode saves power yet wakes up for one-shot temperature update 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-temperature alarm output ( ^OVERTEMP) that asserts when the die temperature exceeds a programmed high limit. The LM95172Q is specified for operation over the wide temperature range of -40°C to 175°C. It is available in die form which makes the LM95172Q ideal multi-chip modules or custom packaging to a wide variety of high-temperature applications. Key Specification ■  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) ■  Temperature Accuracy   +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 35 ms (max) 16-bit mode 280 ms (max) Applications • Automotive • Process Monitoring • Harsh-environment temperature monitoring • Custom-package applications • High-Temperature Modules

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Datasheet

Title		Size	Date	Other Language
	LM95172Q Digital Temperature Sensor in Die Form with ±1°C Accuracy from 130°C to 160°C	451 Kbytes	4-Feb-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-1262: Application Note 1262 Four-Speed Fan Control Using Simple Remote Diode Temperature Sensor	70 Kbytes	1-Oct-02

More Application Notes

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	AN-1155: Application Note 1155 A Simple Software I2C Routine for the COP8	82 Kbytes	15-May-04
	AN-1260: Application Note 1260 Autonomous Fan Control for Processor Systems Using the LM85	74 Kbytes	10-Mar-04
	AN-1262: Application Note 1262 Four-Speed Fan Control Using Simple Remote Diode Temperature Sensor	70 Kbytes	1-Oct-02

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM95172QA2 MDA	CMOS7	0	18406	0	0	1089000	4	309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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