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  ON Semiconductor Electronic Components Datasheet  

ADM1032 Datasheet

Remote and Local System Temperature Monitor

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ADM1032 pdf
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 onchip 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 ADM10321 and ADM10322 are available. The difference
between the ADM1032 and the ADM10321 is the default value of
the external THERM limit. The ADM10322 has a different SMBus
address. The SMBus address of the ADM10322 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
http://onsemi.com
SOIC8 NB
CASE 751
MSOP8
CASE 846AB
PIN ASSIGNMENT
VDD
D+
D
THERM
1
2
3
4
(Top View)
8 SCLK
7 SDATA
6 ALERT
5 GND
MARKING DIAGRAMS
8
1032AR
#YYWW
XXXX
8
1032AR
01
#YYWW
11
Marking #1
Marking #2
SOIC8 NB
1023AR = Specific Device Code
# = Pb-Free Package
YY = Year
W = Work Week
XX = Assembly Lot
8
T1x
AYWG
G
1
MSOP8
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)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2013
October, 2013 Rev. 13
1
Publication Order Number:
ADM1032/D


  ON Semiconductor Electronic Components Datasheet  

ADM1032 Datasheet

Remote and Local System Temperature Monitor

No Preview Available !

ADM1032 pdf
ADM1032
D+ 2
D3
ON-CHIP
TEMPERATURE
SENSOR
LOCAL TEMPERATURE
VALUE REGISTER
ANALOG
MUX
A/D
CONVERTER
BUSY
RUN/STANDBY
REMOTE TEMPERATURE
VALUE REGISTER
REMOTE OFFSET
REGISTER
EXTERNAL DIODE OPEN-CIRCUIT
ADM1032
LIMIT
COMPARATOR
STATUS REGISTER
ADDRESS POINTER
REGISTER
CONVERSION RATE
REGISTER
LOCAL TEMPERATURE
LOW LIMIT REGISTER
LOCAL TEMPERATURE
HIGH LIMIT REGISTER
REMOTE TEMPERATURE
LOW LIMIT REGISTER
REMOTE TEMPERATURE
HIGH LIMIT REGISTER
LOCAL THERM LIMIT
REGISTER
EXTERNAL THERM LIMIT
REGISTER
CONFIGURATION
REGISTER
INTERRUPT
MASKING
SMBUS INTERFACE
15
VDD
GND
7
SDATA
8
SCLK
Figure 1. Functional Block Diagram
6 ALERT
4 THERM
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
Positive Supply Voltage (VDD) to GND
D+
Dto GND
SCLK, SDATA, ALERT
0.3, +5.5
0.3 to VDD + 0.3
0.3 to +0.6
0.3 to +5.5
V
V
V
V
THERM
Input Current, SDATA, THERM
0.3 to VDD + 0.3
1, +50
V
mA
Input Current, D
±1 mA
ESD Rating, All Pins (Human Body Model)
> 1000
V
Maximum Junction Temperature (TJ Max)
Storage Temperature Range
150
65 to +150
°C
°C
IR Reflow Peak Temperature
220 °C
IR Reflow Peak Temperature for Pb-Free
260 °C
Lead Temperature (Soldering 10 sec)
300 °C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
NOTE: This device is ESD sensitive. Use standard ESD precautions when handling.
Table 2. THERMAL CHARACTERISTICS
Package Type
8-lead SOIC NB Package
8-lead MSOP Package
qJA Unit
121 °C
142 °C
http://onsemi.com
2


Part Number ADM1032
Description Remote and Local System Temperature Monitor
Maker ON Semiconductor
Total Page 18 Pages
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