Features • SOT23-5 or No-Pull-Back LLP-6 Packages • Operates over a full -40°C to +150°C range • SPI and MICROWIRE Bus interface Description The LM71 is a low-power, high-resolution digital temperature sensor with an SPI and MICROWIRE compatible interface, available in the 5-pin SOT23 or the 6-pin LLP (no pull back) package. The host can query the LM71 at any time to read temperature. Its low operating current is useful in systems where low power consumption is critical. The LM71 has 13-bit plus sign temperature resolution (0.03125°C per LSB) while operating over a temperature range of -40°C to +150°C. The LM71's 2.65V to 5.5V supply voltage range, fast conversion rate, low supply current, and simple SPI interface make it ideal for a wide range of applications. Key Specification Supply Voltage   2.65V to 5.5V Supply Current operating 300 µA (typ)     550 µA (max) Temperature Accuracy -10°C to +65°C ±1.5°C (max)   -40°C to 150°C +3/- 2°C (max) Temperature Resolution   31.25 m°C Applications • System Thermal Management • Personal Computers • Portable Electronic Devices • Disk Drives • Office Electronics • Electronic Test Equipment • Vending Machines

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Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LM71 SPI/MICROWIRE 13-Bit Plus Sign Temperature Sensor	630 Kbytes	2-Feb-05	日本語

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Design Tools

Title	Size	Date
SensorEval Software for Thermal Mangement Products

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM71A MDA	CMOS7	0	18406	0	0	1089000	4	309006723
LM71CIMF	CMOS7	0	18406	0	0	1089000	4	309006723
LM71CIMFX	CMOS7	0	18406	0	0	1089000	4	309006723
LM71CISD	CMOS7	0	18406	0	0	1089000	4	309006723
LM71CISDX	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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