LM293A 查看數據表（PDF） - STMicroelectronics
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LM293A Datasheet PDF : 15 Pages
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Electrical Characteristics
LM193, LM193A, LM293, LM293A, LM393, LM393A
Figure 12. Low frequency op-amp with offset Figure 13. Zero crossing detector
adjust
(single power supply)
5V
Offset Adjust 100kW
R2
Rs
RI
eI ~
1MW
1kW
1MW
15kW
1/2
LM193
0.5mF
R1
100kW
5V
2N 2222
eo
5V
100kW
5.1kW
5.1kW
eI
1N4148
100kW
1/2
LM193
5.1kW
10kW
20MW
Figure 14. Limit comparator
VCC (12V)
V(ref)
high
2RS
RS
10kW
1/2
LM193
Lamp
eI ~
V(ref)
low
2RS
1/2
LM193
2N 2222
Figure 16. Split-supply applications - zero
crossing detector
15V
Figure 15. Crystal controlled oscillator
VCC = 15V
200kW
0.1mF
100kW
1/2
LM193
2kW
VCC
0
eo
200kW
f = 100kHz
Figure 17. Comparator with a negative
reference
15V
eI ~
1/2
LM193
5.1k W
eo
15V
eI ~
1/2
LM193
5V
15V
5.1k W
eo
8/15
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