Datasheet > ADM1021ARQ-REEL7

ADM1021ARQ-REEL7

更新时间： 2024-11-19 14:49:19

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管
页数	文件大小	规格书
12页	139K
描述
IC SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16, Analog IC:Other

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数据手册
替代型号

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ADM1021ARQ-REEL7 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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ADM1021ARQ-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
ADM1021AARQZ	ADI	完全替代	Low-Cost Microprocessor System Temperature Monitor
ADM1021ARQ	ADI	完全替代	Low Cost Microprocessor System Temperature Monitor
ADM1021ARQZ	ADI	功能相似	IC SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16, Analog IC:Other

与ADM1021ARQ-REEL7相关器件

型号	品牌	获取价格	描述	数据表
ADM1021ARQZ	ADI	获取价格	IC SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16, Analog IC:Other
ADM1021ARQZ-REEL7	ADI	获取价格	IC SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16, Analog IC:Other
ADM1022	ADI	获取价格	Low-Cost PC Temperature Monitor and Fan Control ASIC
ADM102-22/12VDC	ETC	获取价格	Analog IC
ADM102-22/24VDC	ETC	获取价格	Analog IC
ADM102-22/48VDC	ETC	获取价格	Analog IC
ADM1022ARQ	ADI	获取价格	Low-Cost PC Temperature Monitor and Fan Control ASIC
ADM1022ARQ-REEL7	ADI	获取价格	IC 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, MO-137AB, QSOP-16, Power Management Circuit
ADM1022ARQZ	ADI	获取价格	IC 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, MO-137AB, QSOP-16, Power Management Circuit
ADM1022ARQZ-REEL	ADI	获取价格	暂无描述

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