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ADM1032XR-4REEL7 PDF预览

ADM1032XR-4REEL7

更新时间: 2024-11-10 03:09:43
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
16页 179K
描述
IC SPECIALTY ANALOG CIRCUIT, PDSO8, MICRO, SOIC-8, Analog IC:Other

ADM1032XR-4REEL7 数据手册

 浏览型号ADM1032XR-4REEL7的Datasheet PDF文件第2页浏览型号ADM1032XR-4REEL7的Datasheet PDF文件第3页浏览型号ADM1032XR-4REEL7的Datasheet PDF文件第4页浏览型号ADM1032XR-4REEL7的Datasheet PDF文件第5页浏览型号ADM1032XR-4REEL7的Datasheet PDF文件第6页浏览型号ADM1032XR-4REEL7的Datasheet PDF文件第7页 
PRELIMINARY TECHNICAL DATA  
± ±1° ꢀLoca cꢁn ꢂReLꢃR  
a
SysꢃReTRepRrcꢃurRMLꢁiꢃLr  
ADM±032*  
FEATURES  
PRODUCT DESCRIPTION  
On-chip and remote temperature sensing  
Offset Registers for System Calibration  
1oC Accuracy and Resolution on Local Channel  
0.125oC Resolution/1oC Accuracy on Remote Channel  
Fast (up to 32 Conversions/second)  
ProgrammableOver/UnderTemperatureLimits  
Programmable Fault Queue  
ProgrammableTHERMLimits  
ProgrammableTHERMHysteresis  
2-wire SMBus serial interface  
Supports SMBus Alert  
160µA Max Operating Current  
3µA standby current  
3V to 5.5V supply  
Small 8-pin SO and uSO package  
Optimized for PentiumIII - Allows Reduced  
Guardbanding  
The ADM1032 is an ACPI compliant two-channel digital  
thermometer and under/over temperature alarm, intended  
for use in personal computers and thermal management  
systems. Optimized for the Pentium III , the higher 1°C  
accuracy offered allows systems designers to safely reduce  
temperature guardbanding and increase system  
performance. The device can measure the temperature of  
a microprocessor using a diode-connected NPN or 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 device such as the 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.  
The ADM1032 communicates over a two-wire serial in-  
terface compatible with System Management Bus  
(SMBusTM) standards. Under and over temperature limits  
can be programmed into the device over the serial bus,  
and an ALERT output signals when the on-chip or remote  
temperature measurement is out of range. This output can  
be used as an interrupt, or as an SMBus alert. The  
THERM output is a comparator output that allows CPU  
clock throttling or on/off control of a cooling fan.  
Applications  
DesktopComputers  
NotebookComputers  
SmartBatteries  
IndustrialControllers  
TelecommsEquipment  
Instrumentation  
FUNCTIONAL BLOCK DIAGRAM  
ADDRESS POINTER  
REGISTER  
CONVERSION RATE  
REGISTER  
ON-CHIP TEMP.  
SENSOR  
LOCAL TEMPERATURE  
VALUE REGISTER  
LOCAL TEMPERATURE  
LOW LIMIT REGISTER  
LOCAL TEMPERATURE  
HIGH LIMIT REGISTER  
D+  
D-  
2
A TO D  
CONVERTER  
LIMIT  
COMPARATORS  
ANALOG MUX  
REMOTE TEMPERATURE  
LOW LIMIT REGISTER  
3
BUSY  
RUN/STANDBY  
REMOTE TEMPERATURE  
HIGH LIMIT REGISTER  
REMOTE TEMPERATURE  
VALUE REGISTER  
LOCAL THERM LIMIT  
REGISTER  
EXTERNAL THERM LIMIT  
REGISTER  
CONFIGURATION  
REGISTER  
EXTERNAL DIODE OPEN-  
CIRCUIT  
INTERRUPT  
MASKING  
STATUS REGISTER  
ALERT  
THERM  
6
4
SMBUS INTERFACE  
ADM1032  
1
5
7
8
V
GND  
DD  
SDATA SCLK  
REV.PrL 03/2001  
PentiumIII is a registered trademark of Intel Corporation  
*Patents Pending  
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: 617/329-4700  
Fax: 617/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1997  

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