Datasheet > ADT7470_13

ADT7470_13

更新时间： 2024-11-22 12:27:23

品牌	Logo	应用领域
亚德诺 - ADI		风扇传感器温度传感器控制器
页数	文件大小	规格书
40页	580K
描述
Temperature Sensor Hub and Fan Controller

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ADT7470_13 数据手册

Temperature Sensor Hub and Fan Controller

Data Sheet

ADT7470

FEATURES

Monitors up to 10 remote temperature sensors

Monitors and controls speed of up to 4 fans independently

PWM outputs drive each fan under software control

GENERAL DESCRIPTION

The ADT7470¹controller is a multichannel temperature sensor

and PWM fan controller and fan speed monitor for systems

requiring active cooling. It is designed to interface directly to

an I²C® bus. The ADT7470 can monitor up to 10 daisy-chained

TMP05 temperature sensors. It can also monitor and control

the speed of four fans, in automatic or in manual control loops.

FULL_SPEED

input allows fans to be blasted to maximum

speed by external hardware

SMBALERT

interrupt signals failures to system controller

Three-state ADDR pin allows up to 3 devices on a single bus

Temperature decoder interprets TMP05 temperature sensors

and communicates values over I²C bus

Limit comparison of all monitored values

Supports fast I²C standard (400 kHz max)

Meets SMBus 2.0 electrical specifications

(fully SMBus 1.1-compliant)

FULL_SPEED

input is provided to allow the fans to be

blasted to maximum speed, via external hardware control,

under extreme thermal conditions or on system startup. An

SMBALERT

interrupt communicates error conditions such as

fan under speed and over temperature measurements to the

system service processor. Individual error conditions can then

be read from status registers over the I²C bus.

APPLICATIONS

Servers

Networking and telecommunications equipment

Desktops

FUNCTIONAL BLOCK DIAGRAM

SMBALERT

SDA SCL

ADDR

ADT7470

SMBus

ADDRESS

SELECTION

SERIAL BUS

INTERFACE

FULL_SPEED

PWM1

ADDRESS

POINTER

PWM

REGISTERS

AND

AUTOMATIC

FAN SPEED

CONTROL

PWM

CONFIG

REGISTERS

PWM2

PWM3

PWM4

CONTROLLERS

INTERRUPT

MASKING

TACH1

TACH2

TACH3

TACH4

FAN SPEED

COUNTERS

INTERRUPT

STATUS

REGISTERS

TMP_START

TMP_IN

LIMIT

COMPARATORS

TEMPERATURE

DECODER

VALUE AND

LIMIT

REGISTERS

Figure 1.

¹Protected by Patent Numbers US6,169,442, US6,097,239, US5,982,221, US5,867,012. Other patents pending.

Rev. E Document Feedback

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

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ADT7470ARQ-REEL7	ADI	获取价格	Temperature Sensor Hub and Fan Controller
ADT7470ARQZ	ADI	获取价格	Temperature Sensor Hub and Fan Controller
ADT7470ARQZ-REEL	ADI	获取价格	Temperature Sensor Hub and Fan Controller
ADT7470ARQZ-REEL7	ADI	获取价格	Temperature Sensor Hub and Fan Controller
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ADT7473ARQZ	ROCHESTER	获取价格	DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.5Cel, RECTANGULAR, SURFACE MOUNT, HALOGEN FREE AND

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