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ADT7463

更新时间： 2024-11-21 21:55:43
品牌 Logo 应用领域
亚德诺 - ADI 监视器控制器
页数 文件大小 规格书
53页 714K
描述
dB COOL Remote Thermal Controller and Voltage Monitor

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ADT7463 数据手册

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dBCOOL™ Remote Thermal  
a
Controller and Voltage Monitor  
ADT7463*  
FEATURES  
GENERAL DESCRIPTION  
Monitors up to 5 Supply Voltages  
The ADT7463 dBCOOL controller is a complete systems  
monitor and multiple PWM fan controller for noise-sensitive  
applications requiring active system cooling. It can monitor  
12 V, 5 V, and 2.5 V CPU supply voltages, plus its own supply  
voltage. It can monitor the temperature of up to two remote  
sensor diodes, plus its own internal temperature. It can mea-  
sure and control the speed of up to four fans so that they  
operate at the lowest possible speed for minimum acoustic  
noise. The Automatic Fan Speed Control Loop optimizes fan  
speed for a given temperature. A unique Dynamic TMIN Con-  
trol Mode enables the system thermals/acoustics to be  
intelligently managed. The effectiveness of the system’s thermal  
solution can be monitored using the THERM input. The  
ADT7463 also provides critical Thermal Protection to the  
system using the bidirectional THERM pin as an output to  
prevent system or component overheating.  
Controls and Monitors up to 4 Fan Speeds  
1 On-Chip and 2 Remote Temperature Sensors  
Monitors up to 6 Processor VID Bits  
Dynamic TMIN Control Mode Optimizes System  
Acoustics Intelligently  
Automatic Fan Speed Control Mode Controls System  
Cooling Based on Measured Temperature  
Enhanced Acoustic Mode Dramatically Reduces User  
Perception of Changing Fan SPEEDS  
Thermal Protection Feature via THERM Output  
Monitors Performance Impact of Intel® PENTIUM®  
4
Processor Thermal Control Circuit via THERM Input  
2-Wire and 3-Wire Fan Speed Measurement  
Limit Comparison of All Monitored Values  
Meets SMBus 2.0 Electrical Specifications  
(Fully SMBus 1.1 Compliant)  
APPLICATIONS  
Low Acoustic Noise PCs  
Networking and Telecommunications Equipment  
FUNCTIONAL BLOCK DIAGRAM  
ADDR  
SELECT ADDR EN  
SCL SDA SMBALERT  
VID5  
VID4  
VID3  
VID2  
VID1  
VID0  
VID  
SMBUS  
ADDRESS  
SELECTION  
SERIAL BUS  
INTERFACE  
REGISTER  
ADDRESS  
POINTER  
REGISTER  
AUTOMATIC  
FAN SPEED  
CONTROL  
PWM1  
PWM2  
PWM  
REGISTERS  
AND  
ACOUSTIC  
ENHANCEMENT  
CONTROL  
CONTROLLERS  
PWM3  
PWM  
CONFIGURATION  
REGISTERS  
DYNAMIC  
MIN  
CONTROL  
TACH1  
TACH2  
TACH3  
TACH4  
T
FAN SPEED  
COUNTER  
INTERRUPT  
MASKING  
PERFORMANCE  
MONITORING  
THERMAL  
PROTECTION  
INTERRUPT  
STATUS  
REGISTERS  
THERM  
V
TO ADT7463  
CC  
V
CC  
ADT7463  
D1+  
D1–  
D2+  
D2–  
LIMIT  
COMPARATORS  
10-BIT  
ADC  
INPUT  
SIGNAL  
V
CC  
CONDITIONING  
AND  
+5V  
+12V  
+2.5V  
V
IN  
IN  
IN  
VALUE AND  
LIMIT  
REGISTERS  
ANALOG  
MULTIPLEXER  
BAND GAP  
REFERENCE  
CCP  
BAND GAP  
TEMP. SENSOR  
GND  
*Protected by U.S. Patent Nos. 6,188,189; 6,169,442; 6,097,239; 5,982,221; and 5,867,012. Other patents pending.  
dBCOOL is a trademark of Analog Devices, Inc.  
Intel and Pentium are registered trademarks of Intel Corp.  
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,  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
nor for any infringements of patents or other rights of third parties that may  
resultfromitsuse.Nolicenseisgrantedbyimplicationorotherwiseunderany  
patent or patent rights of Analog Devices.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2002  
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