ADT7470

更新时间： 2024-11-22 04:04:47

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	519K
描述
Temperature Sensor Hub and Fan Controller

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ADT7470 数据手册

Temperature Sensor Hub and Fan Controller

ADT7470

Preliminary Technical Data

FEATURES

GENERAL DESCRIPTION

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

The ADT7470 controller is a multichannel temperature sensor

and PWM fan controller and fan speed monitor for noise-

sensitive systems requiring active system cooling. It is designed

to interface directly to an I²C bus and control/monitor the fans

using a service processor. The aim is to quickly develop systems

that are modular and can easily be expanded depending on the

system’s cooling requirements. The device can monitor up to ten

temperature sensors. It can also monitor and control the speed

of four fans so that they operate at the lowest possible speed for

FULL_SPEED

input allows fans to be blasted 100% by

external hardware

SMBALERT

interrupt signals failures to system controller

Tristate ADDR pin allows up to 3 devices on a single bus

Temperature decoder interprets TMP05/TMP06 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

minimum acoustic noise. A

input is provided to

allow the fans to be “blasted” to 100% via external hardware

control, under extreme thermal conditions or on system startup.

SMBALERT

interrupt communicates error conditions such

Footprint compatible with ADT7460

as fan underspeed, fan failure to the system service processor.

Individual error conditions can then be read from status registers

over the I²C bus. In the event of a fan failure condition, any or

all PWM outputs can be programmed to automatically adjust to

100% to provide failsafe cooling.

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.

Protected by Patent Numbers US6,188,189, US6,169,442, US6,097,239, US5,982,221, US5,867,012. Other patents pending.

Rev. PrA

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

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与ADT7470相关器件

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ADT7470_13	ADI	获取价格	Temperature Sensor Hub and Fan Controller
ADT7470ARQ	ADI	获取价格	Temperature Sensor Hub and Fan Controller
ADT7470ARQ-REEL	ADI	获取价格	Temperature Sensor Hub and Fan Controller
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
ADT7473	ADI	获取价格	dBCool Remote Thermal Monitor and Fan Controller
ADT7473	ONSEMI	获取价格	dbCOOL Remote Thermal Monitor and Fan Control
ADT7473_11	ONSEMI	获取价格	dbCOOL Remote Thermal Monitor and Fan Control

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