LM239 STMicroelectronics, LM239 Datasheet - Page 9
LM239
Manufacturer Part Number
LM239
Description
Low power quad voltage comparator
Manufacturer
STMicroelectronics
Datasheet
1.LM339.pdf
(19 pages)
Specifications of LM239
Wide Single Supply Voltage Range Or Dual Supplies For All Devices
+2 to +36 V or ±1 V to ±18 V
Low Input Bias Current
25 nA typ
Low Input Offset Current
±5 nA typ
Low Input Offset Voltage
±1 mV typ
Low Output Saturation Voltage
250 mV typ;(ISINK = 4 mA)
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LM139, LM239, LM339
Figure 14. Time delay generator
Figure 17. Two-decade high-frequency VCO
Figure 15. Low frequency op amp with offset
e
l
~
R
S
adjust
R
2
Offset adjust
R
1
V
V
C1
Input gating signal
CC
V
V
V
0
3
2
1
t t
0 1
Frequency control
1 MΩ
voltage input
V
Vcontrol
CC
t
0
2
5 V
t
t
1 kΩ
o
3
100 kΩ
t
A
t
1 MΩ
4
LM139
100 kΩ
50 kΩ
1/ 4
100 kΩ
R1
15 kΩ
V
0.5 μ F
(ref.)
t
+250 mV
700 Hz
V
CC
10 kΩ
20 kΩ
= + 30 V
0.1 μF
f
o
V control
2N 2222
5 V
100 kHz
Doc ID 2159 Rev 3
10 kΩ
e
o
20 kΩ
LM139
1/4
+50 V
LM139
1/ 4
15 kΩ
500 pF
0.001 μ F
V
51 kΩ
51 kΩ
51 kΩ
C1
Figure 16. Zero crossing detector (single
V
LM139
1
1/ 4
V
CC
V
V
V
3 kΩ
200 kΩ
3
2
C C
0.01 μF
5.1 kΩ
V
= +15 V
e
10 kΩ
10 kΩ
CC
10 kΩ
l
/2
V
CC
/2
5.1 kΩ
100 kΩ
LM139
1/ 4
power supply)
LM139
LM139
LM139
1/4
1/4
1/4
10 MΩ
10 MΩ
10 MΩ
V
1N4148
CC
5.1 kΩ
100 kΩ
3 kΩ
3 kΩ
3k Ω
3 kΩ
Output 2
Output 1
V
V
V
O1
O2
10 kΩ
03
V
V
V
CC
CC
CC
t
t
o
t
o
0
t
1
Typical applications
t
100 kΩ
2
t
3
LM139
20 MΩ
1/ 4
5 V
5.1 kΩ
9/19