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參數(shù)資料
| 型號： | MC1374 |
| 廠商： | Motorola, Inc. |
| 英文描述： | TV MODULATOR CIRCUIT |
| 中文描述： | 電視調(diào)制電路 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 122K |
| 代理商： | MC1374 |
MC1374
8
MOTOROLA ANALOG IC DEVICE DATA
Figure 19. A Channel 4 Vestigial Sideband Filter
Figure 20. Audio Pre–Emphasis Circuit
Figure 21. Crystal Controlled RF Oscillator
for Channel 3, 61.25 MHz
NOTE: See Application Note AN829 for further information.
VCC
8
9
RL = 75
2.7k
39
pF
33pF
8.2pF
100
Output
75
Both transformer windings
4T #23 AWG
close wound on 1/4
″
ID
on common axis, 3/8
″
spacing.
8T #23 AWG
close wound on 1/8
″
ID,
knife tuned to trap Channel 3
61.25 MHz.
24
24
33pF
33pF
24
8.2pF
0
–10
–20
–30
–40
–50
–60
–70
61
65
69
73
Ch. 4
Pix
Ch. 4
S
f, FREQUENCY (MHz)
A
“Flat”
Audio
Input
CC = 0.1
μ
F
–
C = 0.0012
μ
F
r = 56k
6.0k
R
14
Audio
Input
5
Gnd
+
25
20
15
10
5
0
–5
21
210
2100
21k
2
π
RC
1
2
π
(r + R)CC
1
f, FREQUENCY (MHz)
2
π
(2100 Hz)
1
Pre–emphasis = 75
μ
s = rC =
2
π
rC
1
VCC
C1
0.001
R1
470
R2
R3
61.252
MHz
C2
56pF
Ra
180
Rb
18
L1
7
6
0.15
μ
H
470
470
MC1374
R
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