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ADT7473ARQZ-1REEL

更新时间： 2024-11-23 14:47:39
品牌 Logo 应用领域
亚德诺 - ADI 输出元件传感器换能器
页数 文件大小 规格书
72页 1494K
描述
Switch/Digital Output Temperature Sensor, DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT, ROHS COMPLIANT, MO-137AB, QSOP-16

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ADT7473ARQZ-1REEL 数据手册

 浏览型号ADT7473ARQZ-1REEL的Datasheet PDF文件第2页浏览型号ADT7473ARQZ-1REEL的Datasheet PDF文件第3页浏览型号ADT7473ARQZ-1REEL的Datasheet PDF文件第4页浏览型号ADT7473ARQZ-1REEL的Datasheet PDF文件第5页浏览型号ADT7473ARQZ-1REEL的Datasheet PDF文件第6页浏览型号ADT7473ARQZ-1REEL的Datasheet PDF文件第7页 
dBCool Remote Thermal Monitor  
and Fan Controller  
ADT7473/ADT7473-1  
GENERAL DESCRIPTION  
FEATURES  
Controls and monitors up to 4 fans  
The ADT7473/ADT7473-1 dBCool® controller is a thermal  
monitor and multiple PWM fan controller for noise sensitive  
or power sensitive applications requiring active system cooling.  
The ADT7473/ADT7473-1 can drive a fan using either a low  
or high frequency drive signal, monitor the temperature of up  
to two remote sensor diodes plus its own internal temperature,  
and measure and control the speed of up to four fans so they  
operate at the lowest possible speed for minimum acoustic noise.  
High and low frequency fan drive signal  
1 on-chip and 2 remote temperature sensors  
Series resistance cancellation on the remote channel  
Extended temperature measurement range, up to 191°C  
Dynamic TMIN control mode intelligently optimizes system  
acoustics  
Automatic fan speed control mode controls system cooling  
based on measured temperature  
Enhanced acoustic mode dramatically reduces user  
perception of changing fan speeds  
The automatic fan speed control loop optimizes fan speed for a  
given temperature. A unique dynamic TMIN control mode  
enables the system thermals/acoustics to be intelligently  
managed. The effectiveness of the system’s thermal solution  
THERM  
Thermal protection feature via  
Monitors performance impact of Intel Pentium 4 processor  
THERM  
output  
THERM  
can be monitored using the  
ADT7473-1 also provide critical thermal protection to the  
THERM  
input. The ADT7473/  
Thermal control circuit via  
input  
3-wire and 4-wire fan speed measurement  
Limit comparison of all monitored values  
Meets SMBus 2.0 electrical specifications  
(fully SMBus 1.1 compliant)  
system using the bidirectional  
pin as an output to  
prevent system or component overheating.  
Fully RoHS compliant  
FUNCTIONAL BLOCK DIAGRAM  
*ADDREN  
*ADDR SELECT  
SCL SDA SMBALERT  
SMBus  
ADT7473/ADT7473-1  
SERIAL BUS  
INTERFACE  
ADDRESS  
SELECTION  
PWM  
REGISTERS  
AND  
CONTROLLERS  
(HF AND LF)  
PWM1  
PWM2  
PWM3  
ACOUSTIC  
ENHANCEMENT  
CONTROL  
AUTOMATIC  
FAN SPEED  
CONTROL  
ADDRESS  
POINTER  
REGISTER  
DYNAMIC  
T
MIN  
CONTROL  
PWM  
TACH1  
TACH2  
TACH3  
TACH4  
CONFIGURATION  
REGISTERS  
FAN  
SPEED  
COUNTER  
INTERRUPT  
MASKING  
PERFORMANCE  
MONITORING  
INTERRUPT  
STATUS  
REGISTERS  
THERMAL  
PROTECTION  
*THERM_LATCH  
V
TO ADT7473/ADT7473-1  
CC  
V
CC  
D1+  
D1–  
D2+  
D2–  
INPUT  
SIGNAL  
LIMIT  
10-BIT  
ADC  
COMPARATORS  
SRC  
CONDITIONING  
AND  
ANALOG  
MULTIPLEXER  
VALUE AND  
LIMIT  
REGISTERS  
V
CCP  
BAND GAP  
REFERENCE  
BAND GAP  
TEMP SENSOR  
*PIN FUNCTION ONLYAVAILABLE ON THEADT7473-1  
GND  
Figure 1.  
Rev. C  
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 that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 www.analog.com  
Fax: 781.461.3113 ©2005–2007 Analog Devices, Inc. All rights reserved.  
 
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