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ADT7468ARQ

更新时间： 2024-11-22 04:04:47
品牌 Logo 应用领域
亚德诺 - ADI 模拟IC信号电路监视器光电二极管控制器
页数 文件大小 规格书
80页 1012K
描述
dBCool⑩ Remote Thermal Controller and Voltage Monitor

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ADT7468ARQ 数据手册

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dBCool™ Remote Thermal  
Controller and Voltage Monitor  
ADT7468  
FEATURES  
GENERAL DESCRIPTION  
Monitors up to 5 voltages  
Controls and monitors up to 4 fans  
The ADT7468 dBCOOLTM controller is a thermal monitor and  
multiple PWM fan controller for noise-sensitive or power-  
sensitive applications requiring active system cooling. The  
ADT7468 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 that 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 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  
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 can  
Thermal protection feature via THERM output  
Monitors performance impact of Intel® Pentium™ 4  
processor  
Thermal control circuit via THERM input  
2-wire, 3-wire, and 4-wire fan speed measurement  
Limit comparison of all monitored values  
THERM  
be monitored using the  
provides critical thermal protection to the system using the  
THERM  
input. The ADT7468 also  
bidirectional  
pin as an output to prevent system or  
component overheating.  
Meets SMBus 2.0 electrical specifications  
(fully SMBus 1.1 compliant)  
FUNCTIONAL BLOCK DIAGRAM  
SCL SDA SMBALERT  
VID5  
VID4  
ACOUSTIC  
ENHANCEMENT  
CONTROL  
VID3  
VID2  
VID1  
VID0  
SERIAL BUS  
INTERFACE  
ADDRESS  
POINTER  
REGISTER  
AUTOMATIC  
FAN SPEED  
CONTROL  
ACOUSTIC  
ENHANCEMENT  
CONTROL  
PWM1  
PWM2  
PWM3  
PWM REGISTERS  
AND  
CONTROLLERS  
HF & LF  
PWM  
CONFIGURATION  
REGISTERS  
DYNAMIC  
T
MIN  
TACH1  
TACH2  
TACH3  
TACH4  
CONTROL  
FAN SPEED  
COUNTER  
INTERRUPT  
MASKING  
PERFORMANCE  
MONITORING  
THERMAL  
PROTECTION  
THERM  
INTERRUPT  
STATUS  
REGISTERS  
V
TO ADT7468  
SRC  
CC  
V
ADT7468  
CC  
D1+  
D1–  
D2+  
D2–  
LIMIT  
COMPARATORS  
10-BIT  
ADC  
INPUT  
SIGNAL  
CONDITIONING  
AND  
ANALOG  
MULTIPLEXER  
VALUE AND  
LIMIT  
+5V  
+12V  
+2.5V  
IN  
IN  
IN  
BAND GAP  
REGISTERS  
REFERENCE  
V
CCP  
BAND GAP  
TEMP SENSOR  
GND  
Figure 1.  
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, 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  
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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ADT7468ARQ 替代型号

型号 品牌 替代类型 描述 数据表
ADT7468ARQ-REEL7 ADI

完全替代

 dBCool⑩ Remote Thermal Controller and Voltage
ADT7468ARQ-REEL ADI

功能相似

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