ADM1034ARQ-REEL7 Просмотр технического описания (PDF) - Analog Devices

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ADM1034ARQ-REEL7

Thermal Monitor and Fan Speed (RPM) Controller

Analog Devices 

Thermal Monitor and

Fan Speed (RPM) Controller

ADM1034

FEATURES

1 local and 2 remote temperature channels

±1°C accuracy on local and remote channels

Automatic remote temperature channels, up to 1 kΩ

Fast (up to 64 measurements per second)

SMBus 2.0, 1.1, and 1.0 compliant

SMBus address input/LOCATION input to UDID

Programmable over-/undertemperature limits

Programmable fault queue

SMBusALERT output

Fail-safe overtemperature comparator output

Fan speed (RPM) controller

Look-up table for temperature-to-fan-speed control

Linear and discrete options for look-up table

FAN_FAULToutput

THERM input, used to time PROCHOT assertions

REF input, used as reference for THERM (PROCHOT)

3 V to 5.5 V supply

Small 16-lead QSOP package

APPLICATIONS

Desktop and notebook PCs

Embedded systems

Telecommunications equipment

LCD projectors

FUNCTIONAL BLOCK DIAGRAM

VCC

6

ADM1034

DRIVE1 1

DRIVE2 3

MANUAL FAN

SPEED CONTROL

REGISTERS

TEMPERATURE-TO-

FAN-SPEED

LOOK-UP TABLE

FAN SPEED

CONTROLLER

FAN RESPONSE

SMBUS

ADDRESS

SERIAL BUS

INTERFACE

ADDRESS

POINTER

REGISTER

STATUS

REGISTER

ALERT

THERM

MASK

REGISTERS

LIMIT

COMPARATOR

FAULT

QUEUE

16 SCL

15 SDA

8 FAN_FAULT

14 ALERT

7 THERM

TACH1 2

TACH2 4

TACH SIGNAL

CONDITIONING

REF 8

LOCATION 13

D1– 9

D1+ 10

D2– 11

D2+ 12

SRC

BLOCK

BAND GAP

TEMPERATURE

SENSOR

ANALOG

MULTIPLEXER

FAN

SPEED

COUNTER

ADC

VALUE AND

LIMIT

REGISTERS

FAULT

QUEUE

HYSTERESIS

REGISTERS

OFFSET

REGISTERS

BAND GAP

REFERENCE

CONVERSION

RATE REGISTER

CONFIGURATION

REGISTERS

5

GND

Figure 1.

THERM PERCENT

TIMER

Rev. 0

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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

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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

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Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.

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