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LM90 - Remote Diode and Local Digital Temperature Sensor

Datasheet Summary

Description

The LM90 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) serial interface.

The LM90 accurately measures its own temperature as well as the temperature of an external device, such as processor thermal diode or diode connected transistor such as the 2N3904.

Features

  • 1.
  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions.
  • Offset Register Allows Sensing a Variety of Thermal Diodes Accurately.
  • On-board Local Temperature Sensing.
  • 10 Bit Plus Sign Remote Diode Temperature Data Format, 0.125°C Resolution.
  • Diode Fault Detection Circuitry.
  • T_CRIT_A Output Useful for System Shutdown (Open Diode does not Activate T_CRIT_A).
  • ALERT Output Supports SMBus 2.0 Protocol.
  • SMBus 2.0 Compat.

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Datasheet Details

Part number LM90
Manufacturer Texas Instruments
File Size 1.11 MB
Description Remote Diode and Local Digital Temperature Sensor
Datasheet download datasheet LM90 Datasheet
Additional preview pages of the LM90 datasheet.

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Full PDF Text Transcription

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LM90 www.ti.com SNIS126A – MAY 2004 – REVISED MARCH 2013 LM90 ±3°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface Check for Samples: LM90 FEATURES 1 • Accurately Senses Die Temperature of Remote ICs or Diode Junctions • Offset Register Allows Sensing a Variety of Thermal Diodes Accurately • On-board Local Temperature Sensing • 10 Bit Plus Sign Remote Diode Temperature Data Format, 0.125°C Resolution • Diode Fault Detection Circuitry • T_CRIT_A Output Useful for System Shutdown (Open Diode does not Activate T_CRIT_A) • ALERT Output Supports SMBus 2.0 Protocol • SMBus 2.0 Compatible Interface, Supports TIMEOUT • 8-pin VSSOP Package APPLICATIONS • System Thermal Management (e.g.
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