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ADT7481ARMZ-1R7 Dual Channel Temperature Sensor and Overtemperature Alarm
Prototype PCB
Part No.:   ADT7481ARMZ-1R7
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Description:   Dual Channel Temperature Sensor and Overtemperature Alarm
File Size :   253 K    
Page : 20 Pages
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Maker   ONSEMI [ ON SEMICONDUCTOR ]http://www.onsemi.com
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ADT7481
ADDRESS POINTER
REGISTER
ONE−SHOT
REGISTER
ON−CHIP TEMP
SENSOR
D1+
2
D1–
3
D2+
7
D2–
8
ANALOG
MUX
11−BIT A−TO−D
CONVERTER
BUSY
RUN/STANDBY
REMOTE 1 AND 2 TEMP
VALUE REGISTERS
REMOTE 1 AND 2 TEMP
OFFSET REGISTERS
CONVERSION RATE
REGISTER
LIMIT COMPARATOR
LOCAL TEMPERATURE
VALUE REGISTER
DIGITAL MUX
LOCAL TEMPERATURE
THERM LIMIT REGISTER
LOCAL TEMPERATURE
LOW LIMIT REGISTER
LOCAL TEMPERATURE
HIGH LIMIT REGISTER
REMOTE 1 AND 2 TEMP
THERM LIMIT REGISTER
REMOTE 1 AND 2 TEMP
LOW LIMIT REGISTERS
REMOTE 1 AND 2 TEMP
HIGH LIMIT REGISTERS
CONFIGURATION
REGISTERS
INTERRUPT
MASKING
8
ALERT/THERM2
EXTERNAL DIODES OPEN−CIRCUIT
STATUS REGISTERS
ADT7481
1
6
SMBUS INTERFACE
9
10
4
V
DD
GND
SDATA
SCLK
THERM
Figure 1. Functional Block Diagram
ABSOLUTE MAXIMUM RATINGS
Parameter
Positive Supply Voltage (V
DD
) to GND
D+
D− to GND
SCLK, SDATA, ALERT, THERM
Input Current, SDATA, THERM
Input Current, D−
ESD Rating, All Pins (Human Body Model)
Maximum Junction Temperature (T
J
max)
Storage Temperature Range
IR Reflow Peak Temperature
IR Reflow Peak Temperature for Pb−Free
Rating
−0.3
to +3.6
−0.3
to V
DD
+ 0.3
−0.3
to +0.6
Unit
V
V
V
V
mA
mA
V
°C
°C
°C
°C
−0.3
to +3.6
−1
to +50
±1
1500
150
−65
to +150
220
260
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.
THERMAL CHARACTERISTICS
Package Type
10−Lead MSOP
q
JA
142
q
JC
43.74
Unit
°C/W
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