LM358
LOW POWER DUAL OPERATIONAL AMPLIFIERS
Typical Single-Supply Circuit
(Continued) (V
+
=5.0V
DC
)
C1
0.01?F
R4
390K
R6
120K
R5
39K
R1
390K
V
IN
C2
0.01?F
R3
680
-
R2
620K
-
+
V
O
R7
100K
R8
100K
V
+
NEW PRODUCT
+
C3
10?F
f
O
= 1.12KHz
Q = 25
+
Bandpass Active Filter
R2
100K
-
R3
R4
100K 100K
-
I
IN
I
B
+V
O
+V
1
R1
2K
+
-
GAIN ADJUST
R5
100K
V
O
+V
IN
I
B
2N929*
*hi ? AT 50 nA
+
-
R6
100K
+
0.001?F
I
B
-
+V
2
+
R7
100K
I
B
2R
3M
If R1 = R5 & R3 = R4 = R6 = R7 (CMRR depends on match)
2R
2
)(V -V
1
)
V
O
=( 1+
2
R
1
As Shown: V = 101(V
2
-V
1
)
O
R
1.5M
I
B
+
AUX AMP
INPUT CURRENT
COMPENSATION
High Input Z Adjustable-Gain
DC Instrumentation Amplifier
Using Symmetrical Amplifiers to Reduce
Input Current (General Concept)
LM358
Document number: DS35167 Rev. 2 - 2
6 of 14
February 2011
© Diodes Incorporated
DIODES [ DIODES INCORPORATED ]
