LM64 - 1C Remote Diode Temperature Sensor

Product Overview

National Semiconductor

Part number	LM64
Manufacturer	National Semiconductor
File Size	376.58 KB
Description	1C Remote Diode Temperature Sensor
Datasheet	LM64 Datasheet
Additional preview pages of the LM64 datasheet.

The LM64 is a remote diode temperature sensor with PWM fan control.

The LM64 accurately measures its own temperature and that of a remote diode.

The LM64 remote temperature accuracy is factory trimmed for a MMBT3904 diodeconnected transistor with a 16˚C offset for high temperatures.

a PWM, open-drain, fan control output, 5 GPIO (General Purpose Input/Output) and 5 GPD (General Purpose Default) pins. The 8-step Lookup Table allows for a non-linear fan speed vs. temperature transfer function often used to quiet acoustic fan noise. Key Specifications n Remote Diode Temperature Accuracy (includes quantization error) Ambient Temp 30˚C to 50˚C 0˚C to 85˚C Diode Temp 120˚C to 140˚C 25˚C to 140˚C Max Error ± 1.0˚C (max) ± 3.0˚C (max) n Local Temp Accuracy (includes quantization.

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Other Datasheets by National Semiconductor

Published: Mar 22, 2005 |