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LM95241 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM95241
Description  Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm™ Technology (65nm/90nm)
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM95241 Datasheet(HTML) 4 Page - National Semiconductor (TI)

 
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Absolute Maximum Ratings (Note 1)
Supply Voltage
−0.3 V to 6.0 V
Voltage at SMBDAT, SMBCLK
−0.5V to 6.0V
Voltage at Other Pins
−0.3 V to (V
DD + 0.3 V)
Input Current at All Pins (Note 2)
±5mA
Package Input Current (Note 2)
30 mA
SMBDAT Output Sink Current
10 mA
Junction Temperature (Note 3)
+125˚C
Storage Temperature
−65˚C to +150˚C
ESD Susceptibility (Note 4)
Human Body Model
2000 V
Machine Model
200 V
Charged Device Model Model
1000 V
Soldering process must comply with National’s reflow
temperature profile specifications. Refer to
http://www.national.com/packaging/. (Note 5)
Operating Ratings
(Notes 1, 3)
Operating Temperature Range
0˚C to +125˚C
Electrical Characteristics
Temperature Range
T
MIN
≤T
A
≤T
MAX
LM95241CIMM
0˚C
≤T
A
≤+85˚C
Supply Voltage Range (V
DD)
+3.0V to +3.6V
Temperature-to-Digital Converter Characteristics
Unless otherwise noted, these specifications apply for V
DD=+3.0Vdc to 3.6Vdc. Boldface limits apply for TA =TJ =
T
MIN
≤T
A
≤T
MAX; all other limits TA=TJ=+25˚C, unless otherwise noted. TJ is the junction temperature of the LM95241. TD is the
junction temperature of the remote thermal diode.
Parameter
Conditions
Typical
Limits
Units
(Note 6)
(Note 7)
(Limit)
Accuracy Using Local Diode
T
A = 0˚C to +85˚C, (Note 8)
±1
±3
˚C (max)
Accuracy Using Remote Diode, see (Note 9) for
Thermal Diode Processor Type.
T
A = +20˚C to
+40˚C
T
D = +45˚C
to +85˚C
±1.25
˚C (max)
T
A = +0˚C to
+85˚C
T
D = +25˚C
to +140˚C
±2.5
˚C (max)
Remote Diode Measurement Resolution with
filtering turned off
10+sign/11
Bits
0.125
˚C
Remote Diode Measurement Resolution with digital
filtering turned on
12+sign/13
Bits
0.03125
˚C
Local Diode Measurement Resolution
9+sign
Bits
0.25
˚C
Conversion Time of All Temperatures at the
Fastest Setting (Note 11)
TruTherm Mode Disabled for All
Remote Channels
76.5
86.1
ms (max)
TruTherm Mode Enabled for All
Remote Channels
79.1
88.9
ms (max)
Average Quiescent Current (Note 10)
SMBus Inactive, 1 Hz conversion
rate
471
640
µA (max)
Shutdown
356
µA
D− Source Voltage
0.4
V
Diode Source Current Ratio
16
Diode Source Current
(V
D+ −VD−)=+ 0.65V; high-level
172
230
µA (max)
100
µA (min)
Low-level
11
µA
Power-On Reset Threshold
Measure on V
DD input, falling
edge
2.7
1.6
V (max)
V (min)
www.national.com
4


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