參數(shù)資料
型號: MC1377DW
廠商: MOTOROLA INC
元件分類: 顏色信號轉(zhuǎn)換
英文描述: COLOR TELEVISION RGB to PAL/NTSC ENCODER
中文描述: COLOR SIGNAL ENCODER, PDSO20
封裝: PLASTIC, SOIC-20
文件頁數(shù): 11/18頁
文件大小: 643K
代理商: MC1377DW
MC1377
11
MOTOROLA ANALOG IC DEVICE DATA
Figure 14. Optional Chroma Coupling Circuits
0.001
1.0k
0.001
13
10
39pF
56pF
0.001
4.7k
27pF
13
10
1.0k
a) Insertion Loss: 3.0 dB
a)
Bandwidth:
±
1.0 MHz
a)
Delay:
100 ns
b) Insertion Loss: 9.0 dB
b)
Bandwidth:
±
2.0 MHz
b)
Delay: 0
22
μ
H
Power Supplies
The MC1377 is designed to operate from an unregulated
10 V to 14 Vdc power supply. Device current into Pin 14 with
open output is typically 35 mA. To provide a stable reference
for the ramp generator and the video output, a high quality
8.2 V regulator can supply up to 10 mA for external uses,
with an effective source impedance of less than 1.0
. This
regulator is convenient for a tracking dc reference for dc
coupling the output to an RF modulator. Typical turn–on drift
for the regulator is approximately –30 mV over 1 to 2 minutes
in otherwise stable ambient conditions.
Figure 15. Output Termination
9
Output
75
Monitor
MC1377
4.7k
75
Cable
75
SUMMARY
The preceding information was intended to detail the
application and basis of circuit choices for the MC1377. A
complete MC1377 application with the MC1374 VHF
modulator is illustrated in Figure 17. The internal schematic
diagram of the MC1377 is provided in Figure 8.
Figure 16. Application with VHF Modulator
3.58MHz
75
RF
Out
47k
17
18
2
3
4
5
10
13
14
11
12 19 15
7
6
8
9
1
16
20
10
5–25
220
220
S
R
0.1
+
+
+
15
15
15
0.001
3.3kB
G
47
100
220
+12Vdc
0.1
0.1
.01
.01
1.2k
1.2k
Delay Line
Video
Out
Audio
In
1.0
0.001
0.001
mica
53k
0.1
6.8k
120
47
2.2k
VCC
470
0.001
470
470
56
0.12
μ
H
PAL
NTSC
8.2VRef
2.7k
+12Vdc
75
0.33
μ
H
0.33
μ
H
0.001
22
47
22
5.1k
6
7
4
8
9
12
13
10
5
14
11
2
3
1
MC1377
MC1374
+
10
μ
H
+
0.1
Color Bandpass
Transformer (Fig. 24)
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