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MFG:TOSHIBA  Package Cooled:SMD  

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Part Number: ADM1021

 

MFG: TOSHIBA

Package Cooled: SMD

 

Description: The ADM1021 is a two-channel digital thermometer and under/over temperature alarm, intended for use in...


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ADM1021 General Description


The ADM1021 is a two-channel digital thermometer and under/over temperature alarm, intended for use in personal computers and other systems requiring thermal monitoring and management. The device can measure the temperature of a microprocessor using a diode-connected PNP transistor, which may be
provided on-chip in the case of the Pentium® II or similar processors, or 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.

ADM1021 Maximum Ratings

Positive Supply Voltage (VDD) to GND  . . . . . .0.3 V to +6 V
D+, ADD0, ADD1  . . . . . . . . . . . . . . . . 0.3 V to VDD + 0.3 V
D to GND  . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +0.6 V
Input Current, D  . . . . . . . . . . . . . . . . . . . . . . . . .  . ±1 mA
ESD Rating, all pins (Human Body Model)  . . . . . . . . 2000 V
Continuous Power Dissipation
Up to +70°C  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 mW
Derating above +70°C  . . . . . . . . . . . . . . . . . . . 6.7 mW/°C
Operating Temperature Range  . . . . . . . .55°C to +125°C
Maximum Junction Temperature (TJ max)  . . . . . . .. +150°C
Storage Temperature Range  . . . . . . . . . 65°C to +150°C
Lead Temperature, Soldering
Vapor Phase 60 sec  . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared 15 sec  . . . . . . . . . . . . . . . . . . . . . . . . .  . +200°C

ADM1021 Features

Improved Replacement for MAX1617
On-Chip and Remote Temperature Sensing
No Calibration Necessary
18C Accuracy for On-Chip Sensor
38C Accuracy for Remote Sensor
Programmable Over/Under Temperature Limits
Programmable Conversion Rate
2-Wire SMBus Serial Interface
Supports System Management Bus (SMBus™) Alert
70 mA Max Operating Current
3 mA Standby Current
3 V to 5.5 V Supply
Small 16-Lead QSOP Package

ADM1021 Typical Application

Desktop Computers
Notebook Computers
Smart Batteries
Industrial Controllers
Telecomms Equipment
Instrumentation

ADM1021 Connection Diagram

ADM1021 Connection Diagram

ADM1021 datasheet

ADM1021
PDF/DataSheet Download

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