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LM63 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM63
Description  ±1C/±3C Accurate Remote Diode Digital Temperature Sensor with Integrated Fan Control
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM63 Datasheet(HTML) 5 Page - National Semiconductor (TI)

 
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AC Electrical Characteristics
The following specifications apply for V
DD = 3.0 VDC to 3.6 VDC, and all analog source impedance RS =50
Ω unless other-
wise specified in the conditions. Boldface limits apply for T
A =TMIN to TMAX; all other limits TA= +25˚C.
Symbol
Parameter
Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limit)
TACHOMETER ACCURACY
Fan Control Accuracy
±10
% (max)
Fan Full-Scale Count
65535
(max)
Fan Counter Clock Frequency
90
kHz
Fan Count Update Frequency
1.0
Hz
FAN PWM OUTPUT
Frequency Accuracy
±10
% (max)
Digital Electrical Characteristics
Symbol
Parameter
Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limit)
V
IH
Logical High Input Voltage
2.1
V (min)
V
IL
Logical Low Input Voltage
0.8
V (max)
I
IH
Logical High Input Current
V
IN =VDD
0.005
+10
µA (max)
I
IL
Logical Low Input Current
V
IN = GND
−0.005
−10
µA (max)
C
IN
Digital Input Capacitance
20
pF
SMBus Logical Electrical Characteristics
The following specifications apply for V
DD = 3.0 VDC to 3.6 VDC, and all analog source impedance RS =50
Ω unless other-
wise specified in the conditions. Boldface limits apply for T
A =TMIN to TMAX; all other limits TA = +25˚C.
Symbol
Parameter
Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limit)
SMBDAT OPEN-DRAIN OUTPUT
V
OL
Logic Low Level Output Voltage
I
OL =4 mA
0.4
V (max)
I
OH
High Level Output Current
V
OUT =VDD
0.03
10
µA (max)
SMBDAT, SMBCLK INPUTS
V
IH
Logical High Input Voltage
2.1
V (min)
V
IL
Logical Low Input Voltage
0.8
V (max)
V
HYST
Logic Input Hysteresis Voltage
320
mV
www.national.com
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