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LM95235 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM95235
Description  Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM95235 Datasheet(HTML) 4 Page - National Semiconductor (TI)

 
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Absolute Maximum Ratings (Note 1)
Supply Voltage, V
DD
−0.3V to 6.0V
Voltage at SMBDAT, SMBCLK,
−0.5V to 6.0V
T_CRIT, OS/A0 Pins
Voltage at Other Pins
(V
DD +0.3V)
Input Current at D− Pin (Note 4)
±1mA
Input Current at All Other Pins
(Note 4)
±5mA
Output Sink Current
SMBDAT, T_Crit, OS Pins
10 mA
Package Input Current (Note 4)
30 mA
ESD Susceptibility (Note 3)
Human Body Model
Machine Model
Charged Device Model
2500V
250V
1000V
Junction Temperature (Note 2)
+125˚C
Storage Temperature
−65˚C to +150˚C
Operating Ratings
(Note 1)
Operating Temperature Range
0˚C to +125˚C
Electrical Characteristics
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
LM95235CIMM
0˚C
≤ T
A
≤ +85˚C
Supply Voltage (V
DD)
+3.0V to +3.6V
Soldering process must comply with National Semiconduc-
tor’s Reflow Temperature Profile specifications. Refer to
www.national.com/packaging. (Note 5)
Temperature-to-Digital Converter Characteristics
Unless otherwise noted, these specifications apply for V
DD = +3.0 Vdc to 3.6 Vdc. Boldface limits apply for TA =TJ =TMIN
T
A
≤ T
MAX; all other limits TA =TJ = +25˚C, unless otherwise noted. TJ is the junction temperature of the LM95235. TD is the
junction temperature of the remote thermal diode.
Parameter
Conditions
Typical
(Note 6)
Limits
(Note 7)
Units
Temperature Accuracy Using Local
Diode (Note 8)
T
A = 25˚C to +100˚C
±1
±2
˚C (max)
Temperature Accuracy Using
Remote Diode
(Note 9)
T
A = +25˚C to +85˚C;
T
D = +60˚C to +100˚C
65nm Intel Processor
±0.5
±0.75
˚C (max)
T
A = +25˚C to +85˚C;
T
D = +60˚C to +100˚C
MMBT3904
±0.5
±1.0
˚C (max)
T
A = +25˚C to +85˚C;
T
D = +40˚C to +120˚C
MMBT3904 or
65nm Intel Processor
±0.75
±1.5
˚C (max)
Remote Diode
Measurement Resolution
Digital Filter Off
11
Bits
0.125
˚C
Digital Filter On
13
Bits
0.03125
˚C
Local Diode Measurement
Resolution
11
Bits
0.125
˚C
Conversion Time, Fastest Setting
(Note 10)
Local and Remote Channels
63
72
ms (max)
Local or Remote Channels
33
ms
Quiescent Current
SMBus Inactive, 1 Hz conversion rate
(Note 11)
350
650
µA (max)
Standby Mode
300
µA
D− Source Voltage
400
mV
External Diode Current Source
High-level
172
225
µA (max)
Low-level
10.75
µA
Diode Source Current Ratio
16
Power-On Reset Voltage
2.8
V (max)
1.6
V (min)
T_CRIT Pin Temperature Threshold
Default
+110
˚C
OS Pin Temperature Threshold
Default
+85
˚C
www.national.com
4


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