Temperature Sensors | ADM1023

System Temperature Sensor, ACPI-Compliant, High Accuracy

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Overview

The ADM1023 is a 2-channel digital thermometer and under- and overtemperature alarm for use in personal computers and other systems requiring thermal monitoring and management. Optimized for the Pentium® III, the higher accuracy allows systems designers to safely reduce temperature guard banding and increase system performance. The device can measure the temperature of a microprocessor using a diode-connected PNP transistor, which may be provided on-chip with the Pentium III or similar processors; or it can be a low-cost, discrete NPN/PNP device such as the 2N3904/2N3906. A novel measurement technique cancels out the absolute value of the transistor's base emitter voltage so that no calibration is required. The second measurement channel measures the output of an on-chip temperature sensor to monitor the temperature of the device and its environment.

  • Thermal Management

  • Notebook and Desktop Computers
  • Servers
  • Game Consoles
  • RFID Readers

  • On-chip and remote temperature sensing
  • Offset registers for system calibration
  • 1°C accuracy and resolution on local channel
  • 0.125°C resolution/1°C accuracy on remote channel
  • Programmable over/under temperature limits
  • Programmable over/under temperature limits
  • 2-wire SMBus serial interface
  • 200 µA max operating current (0.25 conversions/second)
  • 1 µA standby current
  • 3 V to 5.5 V supply

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Reference Price

ADM1023ARQZ-REEL

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CAD Model

Pb

A

H

P

QSOP-16

492-01

1

260

REEL

2500

N

Local & Remote

SMBus

0.2

3

5.5

0

120

±1

$6.8546

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Reliability Data

Die Related Summary Data

Device: ADM1023ARQZ-REEL

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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