Features • TruTherm BJT beta compensation technology supports 45nm, 65nm and 90nm Processor remote diodes • Factory trimmed for Intel® 45 nm processor thermal diodes • Accurately senses diode-connected 2N3904 transistors or thermal diodes on-board large processors or ASIC's • Accurately senses its own temperature • Integrated PWM fan speed control output supports high resolution at 22.5kHz frequency for 4-pin fans • Acoustic fan noise reduction with user-programmable 12-step Lookup Table • LUT transition fine resolution smoothing function • Tachometer input for measuring fan RPM • Smart-Tach modes for measuring RPM of fans with pulse-width-modulated power as shown in typical application • ^ALERT output for processor event notification • ^TCRIT output for critical temperature system shutdown • Offset register can adjust for a variety of thermal diodes • 10-bit plus sign and 11-bit unsigned formats, with 1/8°C resolution • Extended resolution to 1/32°C when digital filter enabled • Resolves remote diode temperatures up to 255.875°C • SMBus 2.0 compatible interface, with TIMEOUT and ARA • LLP10 (QFN10) package Description The LM96163 has remote and local temperature sensors with integrated fan control that includes TruTherm BJT transistor beta compensation technology for remote diode sensing. The LM96163 accurately measures: (1) its own temperature and (2) the temperature of a diode-connected transistor, such as a 2N3904, or a thermal diode commonly found on Computer Processors, Graphics Processor Units (GPU) and other ASIC's. The LM96163 has an offset register to correct for errors caused by different non-ideality factors of other thermal diodes. For the latest information contact hardware.monitor.team@nsc.com. The LM96163 also features an integrated, pulse-width-modulated (PWM), open-drain fan control output. Fan speed depends on a combination of the remote temperature reading, the lookup table and register settings. The 12-step Lookup Table (LUT) enables the user to program a non-linear fan speed vs. temperature transfer function often used to quiet acoustic fan noise. In addition a fully programmable ramping function has been added to allow smooth transitions between LUT setpoints. Key Specification ■  Remote Temp Accuracy (includes quantization error) LM96163 Temp Diode Temp Max Error +25 to +85°C +55 to +105°C ±0.75°C +25 to +85°C +40 to +125°C ±1.5°C -40 to +25°C +25 to 125°C ±3.0°C ■  Local Temp Accuracy (includes quantization error) LM96163 Temp  25°C to 125°C ±3.0°C (max) ■  Supply Voltage +3.0 V to +3.6 V ■  Supply Current (0.8Hz Conversion) 456 µA (typ) Applications • Processor Thermal Management • Electronic Test and Office Equipment • Industrial Controls

LM96163 Typical Application MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image LM96163 Typical Application	Block Diagram click for larger image
Typical Performance click for larger image Intel Processor Thermal Diode Performance Comparison

Datasheet

Title		Size	Date	Other Language
	LM96163 Remote Diode Digital Temperature Sensor with Integrated Fan Control and TruTherm ® BJT Transistor Beta Compensation Technology	799 Kbytes	26-Jun-08

Featured Application Notes

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Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM96163CISD	CMOS7	0	18406	0	0	1089000	4	309006723
LM96163CISDX	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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