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ADT7476ARQZ

更新时间： 2024-01-30 07:08:39
品牌 Logo 应用领域
亚德诺 - ADI 传感器换能器监视器输出元件控制器
页数 文件大小 规格书
72页 1418K
描述
dBCool Remote Thermal Controller and Voltage Monitor

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ADT7476ARQZ 技术参数

生命周期：ActiveReach Compliance Code：unknown
风险等级：5.73最大精度（摄氏度）：2.5 Cel
其他特性：HYSTERESIS IS 0.5V主体宽度：3.91 mm
主体高度：1.54 mm主体长度或直径：8.66 mm
外壳：PLASTIC安装特点：SURFACE MOUNT
位数：10最大工作电流：3 mA
最高工作温度：125 °C最低工作温度：-40 °C
输出接口类型：4-WIRE INTERFACE封装形状/形式：RECTANGULAR
传感器/换能器类型：TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL最大供电电压：3.6 V
最小供电电压：3 V表面贴装：YES
端接类型：SOLDERBase Number Matches：1

ADT7476ARQZ 数据手册

 浏览型号ADT7476ARQZ的Datasheet PDF文件第2页浏览型号ADT7476ARQZ的Datasheet PDF文件第3页浏览型号ADT7476ARQZ的Datasheet PDF文件第4页浏览型号ADT7476ARQZ的Datasheet PDF文件第5页浏览型号ADT7476ARQZ的Datasheet PDF文件第6页浏览型号ADT7476ARQZ的Datasheet PDF文件第7页 
dBCool™ Remote Thermal  
Controller and Voltage Monitor  
ADT7476  
FEATURES  
GENERAL DESCRIPTION  
Monitors up to 5 voltages  
Controls and monitors up to 4 fans  
The ADT7476 dBCool controller is a thermal monitor  
and multiple PWM fan controller for noise-sensitive or power-  
sensitive applications requiring active system cooling. The  
ADT7476 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  
Extended temperature measurement range up to 191°C  
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  
The automatic fan speed control loop optimizes fan speed  
for a given temperature. The effectiveness of the system’s  
Monitors performance impact of Intel® Pentium™ 4  
processor  
Thermal control circuit via THERM input  
3-wire and 4-wire fan speed measurement  
Limit comparison of all monitored values  
Meets SMBus 2.0 electrical specifications  
thermal solution can be monitored using the  
input.  
THERM  
The ADT7476 also provides critical thermal protection to  
the system using the bidirectional pin as an output  
THERM  
to prevent system or component overheating.  
FUNCTIONAL BLOCK DIAGRAM  
ADDR  
ADDREN  
SELECT SCL SDA SMBALERT  
VID5  
VID4/GPIO4  
VID3/GPIO3  
VID2/GPIO2  
VID1/GPIO1  
VID0/GPIO0  
GPIO6  
ADT7476  
SMBus  
ADDRESS  
SELECTION  
VID/GPIO  
REGISTER  
SERIAL BUS  
INTERFACE  
ADDRESS  
POINTER  
REGISTER  
PWM  
REGISTERS  
AND  
CONTROLLERS  
(HF AND LF)  
PWM1  
PWM2  
PWM3  
AUTOMATIC  
FAN SPEED  
CONTROL  
PWM  
CONFIGURATION  
REGISTERS  
TACH1  
TACH2  
TACH3  
TACH4  
INTERRUPT  
MASKING  
FAN  
SPEED  
COUNTER  
PERFORMANCE  
MONITORING  
THERMAL  
PROTECTION  
THERM  
INTERRUPT  
STATUS  
V
TOADT7476  
CC  
V
ACOUSTIC  
CC  
REGISTERS  
ENHANCEMENT  
CONTROL  
D1+  
D1–  
D2+  
D2–  
LIMIT  
COMPARATORS  
INPUT  
SIGNAL  
10-BIT  
ADC  
CONDITIONING  
AND  
+5V  
+12V  
+2.5V  
IN  
IN  
IN  
ANALOG  
MULTIPLEXER  
VALUE AND  
LIMIT  
REGISTERS  
BAND GAP  
REFERENCE  
V
CCP  
BAND GAP  
TEMP. SENSOR  
GND  
Figure 1.  
Rev. A  
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  
Fax: 781.461.3113  
www.analog.com  
©2006 Analog Devices, Inc. All rights reserved.  
 
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