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參數(shù)資料
| 型號： | LM231WM |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Precision Voltage-to-Frequency Converters |
| 中文描述： | 精密電壓到頻率轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/15頁 |
| 文件大小： | 368K |
| 代理商： | LM231WM |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LM231A/LM231
40V
Continuous
Continuous
0.2V to +V
S
T
MIN
25C to +85C
LM331A/LM331
40V
Continuous
Continuous
0.2V to +V
S
T
MIN
0C to +70C
Supply Voltage
Output Short Circuit to Ground
Output Short Circuit to V
CC
Input Voltage
T
MAX
T
MAX
Operating Ambient Temperature Range
Power Dissipation (P
D
at 25C)
and Thermal Resistance (
θ
jA
)
(N Package) P
D
θ
jA
Lead Temperature (Soldering, 10 sec.)
Dual-In-Line Package (Plastic)
ESD Susceptibility (Note 4)
N Package
1.25W
100C/W
1.25W
100C/W
260C
260C
500V
500V
Electrical Characteristics
T
A
=25C unless otherwise specified (Note 2)
Parameter
VFC Non-Linearity (Note 3)
Conditions
Min
Typ
±
0.003
Max
±
0.01
Units
% Full-
Scale
% Full-
Scale
%Full-
Scale
4.5V
≤
V
S
≤
20V
T
MIN
≤
T
A
≤
T
MAX
±
0.006
±
0.02
VFC Non-Linearity
In Circuit of Figure 1
Conversion Accuracy Scale Factor (Gain)
LM231, LM231A
LM331, LM331A
Temperature Stability of Gain
LM231/LM331
LM231A/LM331A
Change of Gain with V
S
V
S
= 15V, f = 10 Hz to 11 kHz
±
0.024
±
0.14
V
IN
= 10V, R
S
= 14 k
0.95
0.90
1.00
1.00
1.05
1.10
kHz/V
kHz/V
T
MIN
≤
T
A
≤
T
MAX
, 4.5V
≤
V
S
≤
20V
±
30
±
20
0.01
0.006
±
150
±
50
0.1
0.06
ppm/C
ppm/C
%/V
%/V
kHz
% Full-
Scale
%
4.5V
≤
V
S
≤
10V
10V
≤
V
S
≤
40V
V
IN
= 10V
T
MIN
≤
T
A
≤
T
MAX
Rated Full-Scale Frequency
Gain Stability vs Time
(1000 Hrs)
Overrange (Beyond Full-Scale) Frequency
INPUT COMPARATOR
Offset Voltage
LM231/LM331
LM231A/LM331A
Bias Current
Offset Current
Common-Mode Range
TIMER
Timer Threshold Voltage, Pin 5
Input Bias Current, Pin 5
All Devices
LM231/LM331
LM231A/LM331A
10.0
±
0.02
V
IN
= 11V
10
±
3
±
4
±
3
80
±
8
±
10
±
14
±
10
300
±
100
V
CC
2.0
mV
mV
mV
nA
nA
V
T
MIN
≤
T
A
≤
T
MAX
T
MIN
≤
T
A
≤
T
MAX
T
MIN
≤
T
A
≤
T
MAX
0.2
0.63
0.667
0.70
x V
S
V
S
= 15V
0V
≤
V
PIN 5
≤
9.9V
V
PIN 5
= 10V
V
PIN 5
= 10V
±
10
200
200
±
100
1000
500
nA
nA
nA
www.national.com
2
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