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ADM1028ARQZ-REEL

更新时间： 2024-11-21 12:57:55
品牌 Logo 应用领域
亚德诺 - ADI 显示器风扇二极管
页数 文件大小 规格书
16页 194K
描述
IC SPECIALTY ANALOG CIRCUIT, PDSO16, MO-137AB, QSOP-16, Analog IC:Other

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ADM1028ARQZ-REEL 数据手册

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Remote Thermal Diode  
Monitor with Linear Fan Control  
a
ADM1028  
FEATURES  
GENERAL DESCRIPTION  
The ADM1028 is a low-cost temperature monitor and fan  
controller for microprocessor-based systems. The temperature  
of a remote sensor diode may be measured, allowing monitoring  
of processor temperature in single processor systems. An on-chip  
temperature sensor monitors ambient system temperature.  
On-Chip Temperature Sensor  
External Temperature Measurement with Remote Diode  
Interrupt and Over-Temperature Outputs  
Fault-Tolerant Fan Control with Auto Hardware Trip Point  
Remote Reset and Power-Down Functions  
LDCM Support  
System Management Bus (SMBus) Communications  
Standby Mode to Minimize Power Consumption  
Limit Comparison of all Monitored Values  
DAC Output for Linear Fan Speed Control  
Ramp Rate Register for Control of Rate of Change of  
Fan Speed, Reduction of Fan Acoustics  
Measured values can be read out via the System Management  
Bus, and values for limit comparisons can be programmed in  
over the same serial bus.  
The ADM1028 also contains a DAC for fan speed control. An  
automatic hardware temperature trip point is provided and the fan  
will be driven to full speed if it is exceeded. A Ramp Rate Register  
is provided to control the rate with which fan speed is increased or  
decreased. This is to eliminate sudden changes in fan speed,  
thereby reducing fan acoustics and prolonging the fan’s life.  
APPLICATIONS  
Network Servers and Personal Computers  
Microprocessor-Based Office Equipment  
Test Equipment and Measuring Instruments  
Finally, the chip has remote reset and power-down functionality,  
allowing it to be remotely shut down via the SMBus.  
The ADM1028’s 3.0 V to 5.5 V supply voltage range, low  
supply current, and SMBus make it ideal for a wide range of  
applications. These include hardware monitoring applications  
in PCs, electronic test equipment, and office electronics.  
FUNCTIONAL BLOCK DIAGRAM  
V
CC3AUX  
V
POWER-ON  
RESET  
CC3AUX  
10k⍀  
ADM1028  
SDA  
SCL  
SERIAL BUS  
INTERFACE  
R_OFF  
R_RST  
REMOTE  
FUNCTION  
REGISTER  
ANALOG O/P  
REGISTER,  
COUNTER  
AND 8-BIT DAC  
FAN_SPD/NTEST_IN  
ADDRESS  
POINTER  
REGISTER  
RESET  
AUXRST  
RST  
VALUE AND  
LIMIT  
REGISTERS  
ALERT  
STATUS  
REGISTER  
FAN_SPD SHUTOFF  
AND R_OFF RESET  
LIMIT  
COMPARATORS  
D+  
ADC  
ANALOG  
INTERRUPT  
STATUS  
REGISTERS  
SIGNAL  
CONDITIONING  
D–  
2.5V  
INT MASK  
REGISTER  
BANDGAP  
REFERENCE  
V
CC3AUX  
10k⍀  
INT  
MASK  
GATING  
THERMA/NTEST_OUT  
CONFIGURATION  
REGISTER  
THERMB  
FAN_OFF  
GPI  
GND  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
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: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2002  
1234567...16

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ADM1028ARQZ-REEL 替代型号

型号 品牌 替代类型 描述 数据表
ADM1028ARQZ ADI

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