LM293 STMicroelectronics, LM293 Datasheet - Page 7

• Manufacturer Part Number: LM293
• Description: Low power dual voltage comparator
• Manufacturer: STMicroelectronics

Specifications of LM293

• Wide Single-supply Voltage Range Or Dual Supplies: +2 V to +36 V or ±1 V to ±18 V
• Low Input Bias Current: 20 nA typ.
• Low Input Offset Current: ±3 nA typ.
• Low Input Offset Voltage: ±1 mV typ.
• Low Output Saturation Voltage: 80 mV typ. (Isink= 4 mA)

LM193, LM293, LM393
Figure 13. Low frequency op-amp with offset
Figure 15. Limit comparator
Figure 17. Split-supply applications - zero
e
I ~
R
s
e
high
low
V
V
I ~
(ref)
(ref)
e
I ~
R2
adjust
crossing detector
R
Offset Adjust
2R
R
2R
I
S
S
S
LM193
1M W
1/2
LM193
LM193
15V
1/2
1/2
15V
5V
1k W
100k W
10k W
V
CC
1M W
LM193
(12V)
1/2
100k W
R1
15k W
0.5 m F
2N 2222
5.1k W
Lamp
e
o
Doc ID 2164 Rev 12
2N 2222
5V
e
o
Figure 14. Zero crossing detector
Figure 16. Crystal controlled oscillator
Figure 18. Comparator with a negative
e
I
e
0.1 m F
5.1kW
I ~
200k W
200kW
(single power supply)
reference
5V
1N4148
5.1kW
100kW
f = 100kHz
V
LM193
CC
100k W
1/2
LM193
1/2
= 15V
10kW
15V
15V
Typical applications
2k W
100kW
LM193
e
1/2
20MW
o
5V
V
CC
5.1k W
0
e
o
5.1kW
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