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ADM1023ARQZ 데이터시트(PDF) 1 Page - ON Semiconductor

부품명 ADM1023ARQZ
상세설명  ACPI-Compliant, High Accuracy Microprocessor System Temperature Monitor
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제조업체  ONSEMI [ON Semiconductor]
홈페이지  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2010
May, 2010 − Rev. 9
1
Publication Order Number:
ADM1023/D
ADM1023
ACPI-Compliant, High
Accuracy Microprocessor
System Temperature Monitor
The ADM1023 is a 2−channel digital thermometer and
under/overtemperature alarm for use in personal computers and other
systems requiring thermal monitoring and management. Optimized
for the Pentium
® III, the higher accuracy allows systems designers to
safely reduce temperature guard banding and increase system
performance. The device can measure the temperature of a
microprocessor using a diode−connected PNP transistor, which may
be provided on−chip with the Pentium III or similar processors; or it
can be a low−cost, discrete NPN/PNP device such as the
2N3904/2N3906. A novel measurement technique cancels out the
absolute value of the transistor’s base emitter voltage so that no
calibration is required. The second measurement channel measures the
output of an on−chip temperature sensor to monitor the temperature of
the device and its environment.
The ADM1023 communicates over a 2−wire serial interface
compatible with SMBus standards. Under/overtemperature limits can
be programmed into the device over the serial bus, and an ALERT
output signals when the on−chip or remote temperature is out of range.
This output can be used as an interrupt or as an SMBus ALERT.
FEATURES
Next Generation Upgrade of 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/Undertemperature Limits
Programmable Conversion Rate
Supports System Management Bus (SMBus) ALERT
2−Wire SMBus Serial Interface
200 mA Max Operating Current (0.25 Conversions/Second)
1 mA Standby Current
3.0 V to 5.5 V Supply
Small 16−Lead QSOP Package
Pb−Free Packages are Available
APPLICATIONS
Desktop Computers
Notebook Computers
Smart Batteries
Industrial Controllers
Telecomm Equipment
Instrumentation
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
ORDERING INFORMATION
xxx
= Specific Device Code
#
= Pb−Free Package
YYWW = Date Code
XXX
= Assembly Lot ID
MARKING DIAGRAM
1
QSOP−16
CASE 492
1023A
RQZ
#YYWW
XXX
1
2
3
4
5
6
7
8
ADM1023
TOP VIEW
14
13
12
11
10
9
VDD
D+
D–
GND
ADD1
NC
NC
ADD0
GND
NC
ALERT
SDATA
NC
16
15
NC
STBY
SCLK


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