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參數(shù)資料
| 型號(hào)： | LM40 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Hardware Monitor with Dual Thermal Diodes and SensorPath Bus |
| 中文描述： | 硬件監(jiān)控雙熱二極管和SensorPath總線 |
| 文件頁數(shù)： | 5/27頁 |
| 文件大?。?/td> | 369K |
| 代理商： | LM40 |
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TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS
Parameter
Conditions
Typical
(Note 7)
188
11.75
Limits
(Note 8)
280
Units
(Limits)
μA (max)
μA
Diode Source Current
(V
D+
V
D
) = +0.65 V; High Current
Low Current
Diode Source Current High Current to Low Current
Ratio
ANALOG TO DIGITAL CONVERTER CHARACTERISTICS
16
Symbol
Parameter
Conditions
Typical
(Note 7)
Limits
(Note 8)
±
2
Units
(Limit)
%FS
(max)
Bits
LSB
%/V
k
(min)
k
(max)
TUE
Total Unadjusted Error(Note 11)
Resolution
Differential Non-linearity
Power Supply Sensitivity
Input Resistance, all analog inputs (total resistance
of divider chain)
SWD and ADD DIGITAL INPUT CHARACTERISTICS
9
DNL
1
±
1
210
140
400
Symbol
Parameter
Conditions
Typical
(Note 7)
Limits
(Note 8)
2.1
V+ + 0.5
0.8
-0.5
90% x V+
10% x V+
Units
(Limit)
V (min)
V (max)
V (max)
V (min)
V (min)
V (max)
mV
μA (max)
μA
V
IH
SWD Logical High Input Voltage
V
IL
SWD Logical Low Input Voltage
V
IH
V
IL
V
HYST
I
L
ADD Logical High Input Voltage
ADD Logical Low Input Voltage
Input Hysteresis
SWD and ADD Input Current
SWD Input Current with V+ Open or
Grounded
300
±
0.005
±
0.005
GND
≤
V
IN
≤
V+
GND
≤
V
IN
≤
3.6V,
and V+ Open or
GND
±
10
C
IN
Digital Input Capacitance
10
pF
SWD DIGITAL OUTPUT CHARACTERISTICS
Symbol
Parameter
Conditions
Typical
(Note 7)
Limits
(Note 8)
0.4
0.2
±
10
Units
(Limit)
V (max)
V (max)
μA (max)
pF
V
OL
Open-drain Output Logic “Low”
Voltage
I
OL
= 4mA
I
OL
= 50μA
I
OH
C
OUT
Open-drain Output Off Current
Digital Output Capacitance
±
0.005
10
AC Electrical Characteristics
The following specification apply for V+ = +3.0 V
to +3.6 V
, unless otherwise specified.
Boldface limits apply for
T
= T
= T
=0C to T
=85C
; all other limits T
= T
= 25C. The SensorPath Characteristics conform to the SensorPath
specification revision 0.98. Please refer to that speciation for further details.
Symbol
Parameter
Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limits)
HARDWARE MONITOR CHARACTERISTICS
t
CONV
Total Monitoring Cycle Time (Note 13)
All Voltage and
Temperature readings
(Default)
182
163.8
ms (min)
200.2
ms (max)
SensorPath Bus CHARACTERISTICS
t
f
SWD fall time (Note 16)
R
pull-up
=1.25 k
±
30%,
C
L
=400 pF
300
ns (max)
L
www.national.com
5
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