Datasheet

LM158,A-LM258,A-LM358,A
8/12
HIGH INPUT Z, DC DIFFERENTIAL AMPLIFIER
HIGH INPUT Z ADJUSTABLE GAIN DC
INSTRUMENTATION AMPLIFIER
USING SYMMETRICAL AMPLIFIERS TO
REDUCE INPUT CURRENT
LOW DRIFT PEAK DETECTOR
ACTIVE BAND-PASS FILTER
R1
100k
W
R2
100k
W
R4
100k
W
R3
100k
W
+V2
+V1
V
o
1/2
LM158
1/2
LM158
if R1 = R5 and R3 = R4 = R6 = R7
e
o
= [ 1 + ] ( (e
2
+ e
1
)
As shown e
o
= 101 (e
2
+ e
1
)
2
R 1
R 2
-----------
R3
100k
W
e
O
1/2
LM158
R1
100k
W
e
1
R7
100k
W
R6
100k
W
R5
100k
W
e
2
R2
2k
W
Gain adjust
R4
100k
W
1/2
LM158
1/2
LM158
if R1 = R5 and R3 = R4 = R6 = R7
e
o
= [ 1 + ] ( (e
2
+ e
1
)
As shown e
o
= 101 (e
2
+ e
1
)
2
R 1
R 2
-----------
1/2
LM158
I
B
2N 929
0.001
m
F
I
B
3M
W
I
B
e
o
I
I
e
I
I
B
I
B
Input current compensation
1.5M
W
1/2
LM158
I
B
2N 929
0.001
m
F
I
B
3R
3M
W
I
B
Input current
compensation
e
o
I
B
e
I
1/2
LM158
Z
o
Z
I
C
1
m
F
2I
B
R
1M
W
2I
B
1/2
LM158
1/2
LM158
1/2
LM158
R8
100k
W
C3
10
m
F
R7
100k
W
R5
470k
W
C1
330pF
V
o
V
CC
R6
470k
W
C2
330
p
F
R4
10M
W
R1
100k
W
R2
100k
W
+V1
R3
100k
W
1/2
LM158
1/2
LM158