EEWORLDEEWORLDEEWORLD

Part Number

Search

AMD1027

Description
dBCOOL Remote Thermal Controller and Voltage Monitor
File Size518KB,56 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet View All

AMD1027 Overview

dBCOOL Remote Thermal Controller and Voltage Monitor

dB
COOL
Remote Thermal
Controller and Voltage Monitor
ADM1027
*
FEATURES
Monitors up to 5 Supply Voltages
Controls and Monitors up to 4 Fan Speeds
1 On-Chip and 2 Remote Temperature Sensors
Monitors up to 5 Processor VID Bits
Automatic Fan Speed Control Mode Controls System
Cooling Based on Measured Temperature
Enhanced Acoustic Mode Dramatically Reduces User
Perception of Changing Fan Speeds
2-Wire and 3-Wire Fan Speed Measurement
Limit Comparison of All Monitored Values
Meets SMBus 2.0 Electrical Specifications
(Fully SMBus 1.1 Compliant)
APPLICATIONS
Low Acoustic Noise PCs
Networking and Telecommunications Equipment
FUNCTIONAL BLOCK DIAGRAM
ADDR
SELECT
ADDR EN
SCL SDA
SMBALERT
GENERAL DESCRIPTION
The ADM1027
dBCOOL
controller is a complete systems
monitor and multiple PWM fan controller for noise sensitive
applications requiring active system cooling. It can monitor
12 V, 5 V, 2.5 V CPU supply voltage, plus its own supply volt-
age. It can monitor the temperature of up to two remote sensor
diodes, plus its own internal temperature. It can measure and
control the speed of up to four fans so that they operate at the
lowest possible speed for minimum acoustic noise. The auto-
matic fan speed control loop optimizes fan speed for a given
temperature. Once the control loop parameters are programmed,
the ADM1027 can vary fan speed without CPU intervention.
VID4
VID3
VID2
VID1
VID0
AUTOMATIC
FAN SPEED
CONTROL
VID
REGISTER
SMBUS
ADDRESS
SELECTION
SERIAL BUS
INTERFACE
ADDRESS
POINTER
REGISTER
PWM
REGISTERS
AND
CONTROLLERS
PWM
CONFIGURATION
REGISTERS
PWM1
PWM2
PWM3
TACH1
TACH2
TACH3
TACH4
V
CC
D1+
D1–
D2+
D2–
+5V
IN
+12V
IN
+2.5V
IN
V
CCP
ACOUSTIC
ENHANCEMENT
CONTROL
FAN SPEED
COUNTER
INTERRUPT
MASKING
V
CC
TO ADM1027
ADM1027
INPUT
SIGNAL
CONDITIONING
AND
ANALOG
MULTIPLEXER
INTERRUPT
STATUS
REGISTERS
10-BIT
ADC
LIMIT
COMPARATORS
BAND GAP
REFERENCE
BAND GAP
TEMP. SENSOR
GND
VALUE AND
LIMIT
REGISTERS
*Protected
by U.S. Patent Nos. 6,188,189; 6,169,442; 6,097,239; 5,982,221;
and 5,867,012. Other patents pending.
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, 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. Trademarks and
registered trademarks are the property of their respective companies.
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
© 2003 Analog Devices, Inc. All rights reserved.
A deeper understanding of PC
It feels good. Check it out when you have time....
jialilv RF/Wirelessly
Urgent! Make a reward of 500RMB
Urgently looking for a UCOS A/D conversion display based on S3C44BO 4-channel LCD display curve. The screen displays for three minutes. If it exceeds three minutes, move the right half of the screen t...
liu600221 Embedded System
Everyone, please come and see the question. The title is not clear.
Well, like this, I need to count, yes, a counter. Power on - read the count value - add 1 and save, the program is like this, just to count the number of times the computer is turned on. But the probl...
yl20084784 FPGA/CPLD
FPGA training—DSP system design and implementation based on FPGA
1. Course Introduction In communication and image processing applications, powerful digital signal processing (DSP) capabilities are required. When the fastest digital signal processor (DSP) still can...
annoynoise Embedded System
How to put array into flash in iar
This happens when I run it, how can I solve it?...
刘123 MCU
stm8a, why do you let me down so much? ? ? ? (MCU automatically resets,)
During the program running, the MCU resets automatically out of order, and the value of the reset register RST_SR is 0. The oscilloscope is used to observe the power supply of the MCU, and NRST is ver...
qiufeng stm32/stm8

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 967  1006  443  53  109  20  21  9  2  3 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号