Datasheet > EVAL-ADM1021AEB

EVAL-ADM1021AEB

更新时间： 2024-02-18 21:19:52

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
16页	203K
描述
Low-Cost Microprocessor System Temperature Monitor

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EVAL-ADM1021AEB 数据手册

Low-Cost Microprocessor

System Temperature Monitor^*

ADM1021A

FEATURES

PRODUCT DESCRIPTION

Alternative to the ADM1021

On-Chip and Remote Temperature Sensing

No Calibration Necessary

1؇C Accuracy for On-Chip Sensor

3؇C Accuracy for Remote Sensor

Programmable Overtemperature/Undertemperature

Limits

Programmable Conversion Rate

2-Wire SMBus Serial Interface

Supports System Management Bus (SMBus) Alert

200 mA Max Operating Current

1 mA Standby Current

The ADM1021A is a two-channel digital thermometer and

undertemperature/overtemperature alarm, intended for use in

personal computers and other systems requiring thermal monitor-

ing 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^®III 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.

3 V to 5.5 V Supply

Small 16-Lead QSOP Package

The ADM1021A communicates over a two-wire serial interface

compatible with SMBus standards. Undertemperature and

overtemperature 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 interrupt, or as an SMBus alert.

APPLICATIONS

Desktop Computers

Notebook Computers

Smart Batteries

Industrial Controllers

Telecom 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–

A-TO-D

ANALOG MUX

CONVERTER

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

ADM1021A

GND GND

SDATA

SCLK

ADD0

ADD1

NC = NO CONNECT

*Patents Pending

REV. D

Information furnished by Analog Devices is believed to be accurate and

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

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

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

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

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

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

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与EVAL-ADM1021AEB相关器件

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EVAL-ADM1022	ADI	获取价格	Evaluation Board for Microprocessor System Temperature Monitor
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EVAL-ADM1026EB	ADI	获取价格	Complete Thermal and System Management Controller
EVAL-ADM1028	ADI	获取价格	Evaluation Board for PC Temperature Monitor and Fan Control ASIC
EVAL-ADM1030	ADI	获取价格	Evaluation Board for ACPI Temperature Monitor and PWM Fan Controller
EVAL-ADM1031	ADI	获取价格	Evaluation Board for ACPI Temperature Monitor and PWM Fan Controller
EVAL-ADM1062TQEBZ	ADI	获取价格	Super Sequencer with Margining Control and Temperature Monitoring
EVAL-ADM1063LFEB	ADI	获取价格	Multisupply Supervisor/Sequencer with ADC and Temperature Monitoring
EVAL-ADM1063TQEB	ADI	获取价格	Multisupply Supervisor/Sequencer with ADC and Temperature Monitoring
EVAL-ADM1065LFEB	ADI	获取价格	Super Sequencer-TM and Monitor

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