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| 型號： | EVAL-ADM1031 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | TRANS,VN2222L,FET |
| 中文描述： | 評估板的ACPI溫度監(jiān)視器和PWM風(fēng)扇控制器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 534K |
| 代理商： | EVAL-ADM1031 |
EVAL-ADM1030/31
a
Prelimnary Technical Data
REV. PrA 10/2000
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
which 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, PO. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
Evaluation Board for ACPI Temperature
Monitor and PWMFan Controller
Limit Comparisons of all Monitored Values
TECHNCAL
FEATURES
Optimized for Pentium III
:- Allows Reduced
Guardbanding
Programmable (ACPI) and Automatic Fan Speed Control
Automatic Fan Speed Control allows control Independant
of CPU Intervention after initial setup.
Control Loop minimizes Acoustic Noise and Battery
Consumption
RPM Feedback mode to maintain constant fan speed
Remote Temperature measurement accurate to 1°C using
Remote Diode (2 channels for ADM1031, 1 for ADM1030)
0.125°C Resolution on External Temperature Channels
Local Temperature Sensor with 0.25°C resolution
Pulse Width Modulation Fan Control (PWM) (two fans for
ADM1031, one fan for ADM1030)
Programmable PWM Frequency
Programmable PWM Duty Cycle
Tach Fan Speed Measurement (One Channel for
ADM1030, Two for ADM1031 )
Analog Inputs to measure Fan Speed of 2-wire fans (using
Sense Resistor)
2-Wire Serial System Management Bus(SMBus) with ARA
Over-Temperature
THERM
Output Pin
Programmable
INT
Output Pin
Configurable Offsets for Temperature Channels
3V to 5.5V Supply Range
Shutdown Mode to Minimize Power Consumption
APPLICATIONS
Notebook PC’s, Network Computers and Personal
Computers
Microprocessor Based Office Equipment.
INT R O D U C T IO N
T he ADM1030/31 evaluation board allows the
ADM1030/31 PC T emperature Monitor and PWM Fan
Controller to be quickly and easily evaluated using a
personal computer. Using the evaluation board and the
accompanying software the ADM1030/31 can be
interfaced to any personal computer running Windows
95 or Windows
98 via the computer’s parallel port.
T he evaluation board allows the input and output
functions of the ADM1030/31 to be exercised without the
need for external components. T he software allows control
and monitoring of the ADM1030/31’s internal registers.
T HE AD M1030/31
T he following is a brief description of the ADM1030/31
and a system overview. Further information can be found
on the ADM1030 and ADM1031 datasheet.
T he ADM1030 and ADM1031 function in a very similar
manner. T he main difference is that the ADM1031 is dual
channel and the ADM1030 is single channel i.e. the
ADM1031 has a second remote temperature measurement
channel, a second fan speed measurement channel and a
second PWM fan speed control channel.
T he ADM1030/31 is an ACPI compliant two/three
channel digital thermometer and under/over temperature
alarm, for use in personal computers. A PWM Fan
Control Output controls the speed of cooling fans. T he
speed of these fans may be monitored using the T ach
Inputs. A dedicated Fan Speed Control Loop provides
control even without CPU Intervention.
T he device has a programmable
INT
output to indicate
error conditions. T he
THERM
pin is a failsafe output for
over temperatire conditions.
E V A L UA T ION SY ST E M PA C K A GE C ONT E NT S
T he evaluation system contains the following items
1. T he ADM1030/31 Evaluation Board
2. Centronics Cable
3. CD containing this application note, datasheet and the
ADM1030/31 evaluation software.
E VA L UA T ION BOA R D H A R D WA R E
T he ADM1030/31 evaluation board contains the
following main components which can be identified from
the block diagram, printed circuit board silk screen and
schematic diagram of Figures1, 2 and 3 overleaf.
1. ADM1030 or ADM1031 IC
2. 1 or 2 NPN sensor transistors (depending on whether
ADM1030 or ADM1031 IC is used)
3. L ED indicators
4. Interface Buffers
5. Connector for parallel interface.
6. T est Connector for connecting to remote thermal
sensor (J7)
7. Fan (1 or 2 depending on IC).
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