參數(shù)資料
型號: INA121
元件分類: 測量放大器
英文描述: Precision Gain of 5 Instrumentation Amplifier
中文描述: 5精密增益儀表放大器
文件頁數(shù): 11/12頁
文件大?。?/td> 220K
代理商: INA121
11
INA121
INA121
Transducer
C
1
C
2
Null
R
2
R
1
R
G
V
O
Ref
V
AC
INA121
OPA277
C
1
50nF
R
G
R
2
G
Make G
10 where G = 1 +R
Load
V
IN
G
R
2
I
L
=
R
1
10k
V
IN
Ref
INA121
R
G
V
O
C
0.1μF
OPA277
Ref
R
1
1M
f
–3dB
=
1
2
π
R
1
C
1
= 1.59Hz
V
IN
+
INA121
ISO124
±6V to ±18V
Isolated Power
V+
±15V
Ref
V
IN
V
IN
+
V
O
Isolated
Common
V–
FIGURE 8. Galvanically Isolated Instrumentation
Amplifier.
FIGURE 7. High-Pass Input Filter.
FIGURE 10. Voltage Controlled Current Source.
FIGURE 9. AC-Coupled Instrumentation Amplifier.
INA121
C
1
C
2
R
1
R
2
V
O
2
π
R
1
C
1
1
f
c
=
NOTE: To preserve good low frequency CMR,
make R
1
= R
2
and C
1
= C
2
.
R
G
Ref
FIGURE 11. Capacitive Bridge Transducer Circuit.
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