Datasheet

LM2901 Typical application schematics
Doc ID 2468 Rev 7 7/17
Figure 14. Low frequency op-amp with
offset adjust
Figure 15. Zero crossing detector (single
power supply)
e
l
~
2N 2222
5 V
e
o
R1
100 kΩ
1 kΩ
5 V
1 MΩ
100 kΩ
1 MΩ
Offset adjust
R
S
R
1
15 kΩ
0.5
μ
F
R
2
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LM2901
100 kΩ
10 kΩ
e
l
20 MΩ
5 V
1N4148
5.1 kΩ
5.1 kΩ
100 kΩ
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LM2901
5.1 kΩ
Figure 16. Limit comparator Figure 17. Split-supply applications - zero
crossing detector
10 kΩ
e
I
~
R
S
2R
S
V
(ref)
high
V
(ref)
low
2N 2222
V
CC
Lamp
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LM2901
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LM139
2R
S
(12 V)
15 V
5.1 kΩ
e
o
e
I
~
15 V
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LM2901
Figure 18. Crystal controlled oscillator Figure 19. Comparator with a negative
reference
2 kΩ
200 kΩ
e
o
V
CC
0
100 kΩ
200 kΩ
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LM2901
0.1 μF
f = 100 kHz
V
CC
= 15 V
15 V
5.1 kΩ
e
o
e
I
~
15 V
5 V
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LM2901