ADM1029ARQ データシートの表示（PDF） - Analog Devices

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ADM1029ARQ

Dual PWM Fan Controller and Temperature Monitor for High Availability Systems

Analog Devices 

a Dual PWM Fan Controller and Temperature

Monitor for High Availability Systems

ADM1029*

FEATURES

Software Programmable and Automatic Fan Speed

Control

Automatic Fan Speed Control Allows Control

Independent of CPU Intervention after Initial Setup

Control Loop Minimizes Acoustic Noise and Power

Consumption

Remote and Local Temperature Monitoring

Dual Fan Speed Measurement

Supports Backup and Redundant Fans

Supports Hot Swapping of Fans

Cascadable Fault Output Allows Fault Signaling

between Multiple ADM1029s

Address Pin Allows Up to Eight ADM1029s in A System

Small 24-Lead QSOP Package

APPLICATIONS

Network Servers and Personal Computers

Microprocessor-Based Office Equipment

High Availability Telecommunications Equipment

FUNCTIONAL BLOCK DIAGRAM

VCC

PRESENT1

FAULT1

DRIVE1

ADM1029

PWM

CONTROLLER

SERIAL BUS

INTERFACE

SLAVE ADDRESS

REGISTER

FAN 1 STATUS

REGISTER

FAN 1 MIN

SPEED REGISTER

FAN 1 ALARM

SPEED REGISTER

FAN 1 HOT-PLUG

SPEED REGISTER

ADDRESS POINTER

REGISTER

INTERRUPT MASK

REGISTERS

INTERRUPT STATUS

REGISTERS

LIMIT COMPARATOR

VALUE AND LIMIT

REGISTERS

INTERRUPT

MASKING

TACH1

TACH2

PRESENT2

FAULT2

DRIVE2

PWM

CONTROLLER

FAN SPEED

COUNTER

FAN 2 STATUS

REGISTER

FAN 2 MIN

SPEED REGISTER

FAN 2 ALARM

SPEED REGISTER

FAN 2 HOT-PLUG

SPEED REGISTER

G.P. I/O REGISTER

ADC

ANALOG

MUX

REMOTE SENSOR

SIGNAL

CONDITIONING

BANDGAP

REFERENCE

BANDGAP

TEMP SENSOR

SCL

SDA

INT

CFAULT

RESET

GPIO2

AIN1/GPIO1

AIN0/GPIO0

D2+/GPIO6

D2–/GPIO5

D1+/GPIO4

D1–/GPIO3

TMIN/INSTALL

ADD

GND

*Protected by U.S. Patent Numbers 6,255,973 and 6,188,189

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. 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

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2001

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