LM139,A-LM239,A-LM339,A
TYPICAL SINGLE
(continued)
TWO-DECADE HIGH-FREQUENCY VCO
V
CC
100kΩ
100kΩ
V
CC
500pF
1/4
LM139
3kΩ
5.1kΩ
0.01µ F
1/4
LM139
3kΩ
Frequency control
voltage input
v
control
0.1µF
20kΩ
50kΩ
20k
Ω
Output 1
V
CC
/2
Output 2
1/4
LM139
V
CC
/2
V = +30V
CC
+250mV V
control
+50V
700 Hz
f
o
100kHz
LIMIT COMPARATOR
V
CC
(12V)
CRYSTAL CONTROLLED OSCILLATOR
V = 15V
CC
2R
S
V
(ref)
high
R
S
10kΩ
1/4
LM139
200k
Ω
100k
Ω
2k
Ω
Lamp
0.1
µ
F
1/4
LM139
V
CC
0
e
o
e
I
~
2R
S
V
(ref)
low
1/4
LM139
f = 100kHz
2N 2222
200kΩ
SPLIT-SUPPLY APPLICATIONS
ZERO CROSSING DETECTOR
COMPARATOR WITH A NEGATIVE
REFERENCE
15V
15V
5.1k
Ω
1/4
LM139
1/4
LM139
5.1k
Ω
e
o
e
I
~
e
I
e
o
~
5V
15V
15V
7/10