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LM2903N Datasheet(PDF) 9 Page - STMicroelectronics

Part No. LM2903N
Description  Low-power dual voltage comparator
Download  18 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LM2903N Datasheet(HTML) 9 Page - STMicroelectronics

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LM2903
Typical application schematics
Doc ID 2470 Rev 10
9/18
Figure 20.
Time delay generator
Figure 21.
Two-decade high-frequency VCO
VCC
0
V(ref.)
10 k
Ω
1/2
15 k
Ω
200 k
Ω
3 k
Ω
3 k
Ω
3 k
Ω
10 M
Ω
V
O2
V
03
O1
V
51 k
Ω
V1
V2
0.001
μF
V
C1
V3
VCC
V
C1
V1
V2
V3
0
0 1
t t
3
t
4
t
2
t
t
VCC
t
0
t
1
VCC
VCC
VC C =+15V
1/2
LM2903
1/2
1
/2
10 k
Ω
10 k
Ω
10 k
Ω
10 k
Ω
10 M
Ω
10 M
Ω
51 k
Ω
51 k
Ω
t
2
t
o
t
3
t
o
t
A
t
o
Input gating signal
LM2903
LM2903
LM2903
V
CC
V
CC
100 k
Ω
3 k
Ω
5.1 k
Ω
/2
V
CC
/2
0.01
μF
500 pF
100 k
Ω
0.1
μF
20 k
Ω
50 k
Ω
=+ 30V
+250 mV
Vcontrol +50 V
700 Hz
f
100 kHz
o
20 k
Ω
3 k
Ω
1/ 2
LM2903
1/ 2
LM2903
1/ 2
LM2903
Output 1
Output 2
V
CC
V
CC
Frequency control
voltage input
Vcontrol
10 k
Ω


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