ADM1032ARMZ Просмотр технического описания (PDF) - ON Semiconductor
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ADM1032ARMZ Datasheet PDF : 18 Pages
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ADM1032
+15C Remote and Local
System Temperature Monitor
The ADM1032 is a dual−channel digital thermometer and
under/overtemperature alarm intended for use in PCs and thermal
management systems. The device can measure the temperature of a
remote thermal diode, which can be located on the processor die or can
be a discrete device (2N3904/06), accurate to 1°C. A novel
measurement technique cancels out the absolute value of the
transistor’s base emitter voltage so that no calibration is required. The
ADM1032 also measures its ambient temperature.
The ADM1032 communicates over a 2−wire serial interface
compatible with System Management Bus (SMBus) standards.
Under/overtemperature limits can be programmed into the device over
the SMBus, and an ALERT output signals when the on−chip or remote
temperature measurement is out of range. This output can be used as
an interrupt or as a SMBus alert. The THERM output is a comparator
output that allows CPU clock throttling or on/off control of a cooling
fan. An ADM1032−1 and ADM1032−2 are available. The difference
between the ADM1032 and the ADM1032−1 is the default value of
the external THERM limit. The ADM1032−2 has a different SMBus
address. The SMBus address of the ADM1032−2 is 0x4D.
Features
• On−Chip and Remote Temperature Sensing
• Offset Registers for System Calibration
• 0.125°C Resolution/1°C Accuracy on Remote Channel
• 1°C Resolution/3°C Accuracy on Local Channel
• Fast (Up to 64 Measurements Per Second)
• 2−Wire SMBus Serial Interface
• Supports SMBus Alert
• Programmable Under/Overtemperature Limits
• Programmable Fault Queue
• Overtemperature Fail−Safe THERM Output
• Programmable THERM Limits
• Programmable THERM Hysteresis
• 170 mA Operating Current
• 5.5 mA Standby Current
• 3.0 V to 5.5 V Supply
• Small 8−Lead SOIC and MSOP Packages
• These are Pb−Free Devices
Applications
• Desktop and Notebook Computers
• Smart Batteries
• Industrial Controllers
• Telecommunications Equipment
• Instrumentation
• Embedded Systems
© Semiconductor Components Industries, LLC, 2009
1
December, 2009 − Rev. 11
http://onsemi.com
1
SOIC−8
CASE 751
MARKING
DIAGRAMS
8
1032AR
#YWW
XXXX
1
Marking #1
8
1032AR
01
#YWW
1
Marking #2
# = Pb−Free Package
Y = Year
W = Work Week
XX = Assembly Lot
8
MSOP−8
1 CASE 846AB
T1x
AYWG
G
1
T1x = Refer to Order Info Table
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN ASSIGNMENT
VDD 1
D+ 2
D– 3
THERM 4
8 SCLK
7 SDATA
6 ALERT
5 GND
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
Publication Order Number:
ADM1032/D
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