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EVAL-ADM1023 Datasheet(PDF) 1 Page - Analog Devices

Part No. EVAL-ADM1023
Description  Evaluation Board for Microprocessor System Temperature Monitor
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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EVAL-ADM1023 Datasheet(HTML) 1 Page - Analog Devices

 
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EVAL - ADM1023
a
REV. A
11/10/99
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, P.O. 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., 1998
EvaluationBoardforMicroprocessor
SystemTemperatureMonitor
Preliminary Technical Data
PRELIMINAR
Y
TECHNICAL
DA
TA
FEATURES
Next Generation upgrade to the ADM1021
On-Chip and Remote Temperature Sensing
Offset Registers for System Calibration
1°C Accuracy and Resolution on Local Channel
0.125°C Resolution/1°C Accuracy on Remote Channel
Programmable Over/Under Temperature Limits
Programmable Conversion Rate
2-Wire SMBus Serial Interface
Supports System Management Bus (SMBus
™) Alert
160
µµµµµA Max Operating Current
3
µΑ
µΑ
µΑ
µΑ
µΑ Standby Current
3V to 5.5V Supply
Small 16-Lead QSOP Package
APPLICATIONS
Desktop Computers
Notebook Computers
Smart Batteries
Industrial Controllers
Telecoms Equipment
Instrumentation
INTRODUCTION
The ADM1023 Evaluation Board allows the ADM1023
microprocessor system temperature IC to be quickly and
easily evaluated using a personal computer. Using the
evaluation board and its accompanying software the
ADM1023 can be interfaced to any personal computer
running Windows
™ 95 or Windows™ 98, via the
computer’s parallel printer port.
The evaluation board allows the input and output
functions of the ADM1023 to be exercised without the
need for external components. The software allows control
and monitoring of the ADM1023’s internal registers.
THE ADM1023
The following is a brief description of the ADM1023 and
a system overview. Further information can be found in
the datasheet for the device.
The ADM1023 is a hardware temperature monitor for
personal computers and other microprocessor systems
which features a two-channel digital thermometer and
over/under temperature alarm.
The device can measure the temperature of a
microprocessor using on-chip diode connected transistor
or can use a low cost small signal transistor such as the
2N3904 or the 2N3906. The measurment technique
cancels the absolute value of the transistor’s base emitter
voltage, so that no calibration is required.
EVALUATION SYSTEM PACKAGE CONTENTS
The evaluation system contains the following items
• This application note
• ADM1023 Evaluation Board
• Centronics Cable
• Evaluation Software on 3 floppy disks
EVALUATION BOARD HARDWARE
The ADM1023 evaluation board contains the following
main components which can be identified from the block
diagram, printed circuit board silk screen and schematic
diagram of figures 1, 2 and 3 overleaf.
• ADM1023 IC
• NPN sensor transistor
• LED indicators for power and Alert
• Jumpers for selecting sensor and for setting SMBus
address
• Interface buffers
• Connector for parallel interface
• Test connector for connecting to CPU Transistor
™Windows is a registered trademark of Microsoft Corporation


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