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LM94 - TruTherm Hardware Monitor

Datasheet Summary

Description

The LM94 hardware monitor has a two wire digital interface compatible with SMBus 2.0.

Using a Σ∆ ADC, the LM94 measures the temperature of four remote diode connected transistors as well as its own die and 16 power supply voltages.

Features

  • n n n n n n n n n n n n 8-bit Σ∆ ADC Monitors 16 power supplies Monitors 4 remote thermal diodes and 2 LM60 New TruTherm technology support for precision thermal diode measurements Internal ambient temperature sensing Programmable autonomous fan control based on temperature readings with fan boost support Fan boost support on tachometer limit error event Fan control based on 13-step lookup table or PI Control Loop or combination of both PI fan control loop supports Tcontrol Temperature reading d.

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Datasheet Details

Part number LM94
Manufacturer National Semiconductor
File Size 736.39 KB
Description TruTherm Hardware Monitor
Datasheet download datasheet LM94 Datasheet
Additional preview pages of the LM94 datasheet.

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Full PDF Text Transcription

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April 2006 www.DataSheet4U.com LM94 TruTherm™ Hardware Monitor with PI Loop Fan Control for Server Management LM94 TruTherm™ Hardware Monitor with PI Loop Fan Control for Server Management 1.0 General Description The LM94 hardware monitor has a two wire digital interface compatible with SMBus 2.0. Using a Σ∆ ADC, the LM94 measures the temperature of four remote diode connected transistors as well as its own die and 16 power supply voltages. The LM94 has new TruTherm technology that supports precision thermal diode measurements of processors on sub-micron processes. To set fan speed, the LM94 has two PWM outputs that are each controlled by up to six temperature zones.
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