ADM1021

更新时间： 2024-11-22 22:05:19

品牌	Logo	应用领域
亚德诺 - ADI		微处理器监控
页数	文件大小	规格书
12页	143K
描述
Low Cost Microprocessor System Temperature Monitor

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中文翻译

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ADM1021 数据手册

Low Cost Microprocessor

System Temperature Monitor

ADM1021

FEATURES

PRODUCT DESCRIPTION

Improved Replacement for MAX1617

On-Chip and Remote Temperature Sensing

No Calibration Necessary

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 manage-

ment. The device can measure the temperature of a micropro-

cessor using a diode-connected PNP transistor, which may be

provided on-chip in the case of the Pentium^®II or similar pro-

cessors, 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 chan-

nel measures the output of an on-chip temperature sensor, to

monitor the temperature of the device and its environment.

1؇C Accuracy for On-Chip Sensor

3؇C Accuracy for Remote Sensor

Programmable Over/Under Temperature Limits

Programmable Conversion Rate

2-Wire SMBus Serial Interface

Supports System Management Bus (SMBus™) Alert

70 ␮A Max Operating Current

3 ␮A Standby Current

3 V to 5.5 V Supply

Small 16-Lead QSOP Package

The ADM1021 communicates over a two-wire serial interface

compatible with SMBus standards. Under and over temperature

limits can be programmed into the devices over the serial bus,

and an ALERT output signals when the on-chip or remote

temperature is out of range. This output can be used as an inter-

rupt, or as an SMBus alert.

APPLICATIONS

Desktop Computers

Notebook Computers

Smart Batteries

Industrial Controllers

Telecomms Equipment

Instrumentation

FUNCTIONAL BLOCK DIAGRAM

ADDRESS POINTER

ONE-SHOT

CONVERSION RATE

LOCAL TEMPERATURE

LOW LIMIT REGISTER

LOCAL TEMPERATURE

VALUE REGISTER

LOCAL TEMPERATURE

LOW LIMIT COMPARATOR

ON-CHIP TEMP.

SENSOR

LOCAL TEMPERATURE

HIGH LIMIT COMPARATOR

LOCAL TEMPERATURE

HIGH LIMIT REGISTER

D+

D–

8-BIT A-TO-D

CONVERTER

ANALOG MUX

REMOTE TEMPERATURE

LOW LIMIT REGISTER

REMOTE TEMPERATURE

LOW LIMIT COMPARATOR

BUSY

RUN/STANDBY

REMOTE TEMPERATURE

HIGH LIMIT REGISTER

REMOTE TEMPERATURE

VALUE REGISTER

REMOTE TEMPERATURE

HIGH LIMIT COMPARATOR

CONFIGURATION

STBY

EXTERNAL DIODE OPEN-CIRCUIT

INTERRUPT

MASKING

ALERT

STATUS REGISTER

SMBUS INTERFACE

ADM1021

TEST

GND GND

TEST

SDATA

SCLK

ADD0

ADD1

SMBus is a trademark and Pentium is a registered trademark of Intel Corporation.

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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中文翻译

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与ADM1021相关器件

型号	品牌	获取价格	描述	数据表
ADM102-11/12VDC	ETC	获取价格	Analog IC
ADM102-11/24VDC	ETC	获取价格	Analog IC
ADM102-11/48VDC	ETC	获取价格	Analog IC
ADM1021A	ADI	获取价格	Low-Cost Microprocessor System Temperature Monitor
ADM1021A	ONSEMI	获取价格	Low Cost Microprocessor System Temperature Monitor Microcomputer
ADM1021AARQ	ADI	获取价格	Low-Cost Microprocessor System Temperature Monitor
ADM1021AARQ	ROCHESTER	获取价格	SPECIALTY ANALOG CIRCUIT, PDSO16, MO-137AB, QSOP-16
ADM1021AARQ-REEL	ADI	获取价格	Low-Cost Microprocessor System Temperature Monitor
ADM1021AARQ-REEL7	ADI	获取价格	Low-Cost Microprocessor System Temperature Monitor
ADM1021AARQ-REEL7	ROCHESTER	获取价格	SPECIALTY ANALOG CIRCUIT, PDSO16, MO-137AB, QSOP-16

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