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ADM1021AARQZ-REEL7 PDF预览

ADM1021AARQZ-REEL7

更新时间： 2024-11-23 03:17:51
品牌 Logo 应用领域
亚德诺 - ADI 模拟IC信号电路微处理器温度传感光电二极管监控
页数 文件大小 规格书
16页 203K
描述
Low-Cost Microprocessor System Temperature Monitor

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中文翻译

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ADM1021AARQZ-REEL7 数据手册

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Low-Cost Microprocessor  
a
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  
REGISTER  
ONE-SHOT  
REGISTER  
CONVERSION RATE  
REGISTER  
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  
REGISTER  
STBY  
EXTERNAL DIODE OPEN-CIRCUIT  
INTERRUPT  
MASKING  
ALERT  
STATUS REGISTER  
SMBUS INTERFACE  
ADM1021A  
NC  
V
NC  
GND GND  
NC  
NC  
NC  
SDATA  
SCLK  
ADD0  
ADD1  
NC = NO CONNECT  
DD  
*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  
© 2004 Analog Devices, Inc. All rights reserved.  
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中文翻译

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ADM1021AARQZ-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
ADM1021AARQ-REEL7 ADI

完全替代

 Low-Cost Microprocessor System Temperature Monitor
ADM1021AARQ ADI

完全替代

 Low-Cost Microprocessor System Temperature Monitor

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 		Low Cost Microprocessor System Temperature Monitor
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ADM1021ARQ-REEL ONSEMI

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ADM1021ARQ-REEL ADI

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ADM1021ARQ-REEL7 ADI

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 		IC SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16, Analog IC:Other
ADM1021ARQ-REEL7 ONSEMI

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 		系统温度传感器
ADM1021ARQZ ADI

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 		IC SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16, Analog IC:Other
ADM1021ARQZ-REEL7 ADI

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 		IC SPECIALTY ANALOG CIRCUIT, PDSO16, QSOP-16, Analog IC:Other
ADM1022 ADI

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 		Low-Cost PC Temperature Monitor and Fan Control ASIC
ADM102-22/12VDC ETC

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