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參數(shù)資料
| 型號(hào)： | LM3911 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LM3911 Temperature Controller |
| 中文描述： | LM3911溫度控制器 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大小： | 210K |
| 代理商： | LM3911 |
Typical Applications
(Continued)
Thermometer With Meter Output
R1
*
e
(V
Z
) 0.01
D
T
I
M
(V
Z
b
0.01 T
O
)
Select I
Q
s
2V
R1
#
I
Q
s
2V
**
R2
e
0.01 T
O
b
I
Q
R1
I
Q
R3
e
V
Z
I
Q
b
R1
b
R2
R1
J
V
z
D
T
e
Meter temperature span (
§
K)
I
M
e
Meter full scale current (A)
T
O
e
Meter zero temperature (
§
K)
I
Q
e
Current through R1, R2, R3 at zero
meter current (10
m
A to 1.0 mA) (A)
e
Shunt regulator voltage (use 6.85)
*
Values shown for:
T
O
e
300
§
K,
D
T
e
100
§
K,
I
M
e
1.0 mA, I
Q
e
100
m
A
**
The 0.01 in the above and following equations is in units of V/
§
K or V/
§
C,
and is a result of the basic 0.01V/
§
K sensitivity of the transducer
Ground Referred Thermometer
R1
e
(V
Z
)(10mV)(
D
T)
V
O
R
L
R2
e
0.01 T
O
b
I
Q
R1
(V
Z
b
0.01 T
O
)
I
Q
R3
e
V
Z
I
Q
b
R1
b
R2
V
z
D
T
T
O
V
O
I
Q
e
e
e
e
e
Shunt regulator voltage
Temperature span (
§
K)
Temperature for zero output (
§
K)
Full scale output voltage
s
10V
Current through R1, R2, R3
at zero output voltage
(typically 100
m
A to 1.0 mA)
Meter Thermometer With Trimmed Output
*
Selected as for meter thermometer except T
O
should
be 5
§
K more than desired and I
Q
e
100
m
A
2
Calibrates T
O
Ground Referred Centigrade Thermometer
*
Set zero
Two Terminal Temperature to Current Transducer
*
R2 (
X
)
e
#
V
Z
b
0.01 T
L
J #
I
H
b
0.01 T
H
R1
a
#
V
Z
b
0.01 T
H
J #
0.01 T
L
R1
b
I
L
J
**
0.01
R1 R3
D
T
H
(V
Z
b
0.01 T
L
)
b
T
L
(V
Z
b
0.01 T
H
)
(
R3(
X
)
t
V
Z
#
T
H
T
L
b
1
J
I
H
b
I
L
T
H
T
L
1
R4
e
1
(V
Z
b
0.01 T
L
)(R2)
%
(R2)(0.01 T
L
)
R1
a
#
V
Z
b
0.01 T
L
R2
b
I
L
J
1
R2
a
1
R3
–
b
1
R2
T
L
T
H
e
Temperature for I
H
( K)
V
Z
e
Zener voltage (V)
I
L
e
Low temperature output current (A)
I
H
e
High temperature output current (A)
e
Temperature for I
L
( K)
*
Values shown for I
OUT
e
1 mA to 10 mA for 10
§
F to 100
§
F
2
Set temperature
TL/H/5701–4
**
The 0.01 in the above and following equations is in units of V/
§
K or V/
§
C, and is a result of the basic 0.01V/
§
K sensitivity of the transducer
5
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