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參數資料
| 型號： | LA76818A |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP54 |
| 封裝： | 0.600 INCH, DIP-54 |
| 文件頁數： | 16/44頁 |
| 文件大小： | 289K |
| 代理商： | LA76818A |
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LA76818A
No.8047-23/44
6. Chroma input signal:
As for the PAL signal, the burst swings such as 135
° and 225° every horizontal period.
Chroma describes the phase caused when the burst occurs at 135
°.
As for the NTSC signal, the burst occurs constantly at 180
°.
The figures below are based on the phase of NTSC. When a PAL signal is generated, adjust the phase and then enter
signals.
The item common to both PAL and NTSC is the PAL signal. For those other than this, the measurement must be
performed for each individual signals.
The condition of fsc: Set the following conditions unless otherwise specified.
PAL = 4.433619MHz
NTSC = 3.579545MHz
C-1
X IRE signal (L-X)
C-2
C-3
C-4
C-5
C-6
Burst
0
°
90
° 180° 270°
fsc
40IRE
Burst
fsc 346
°
40IRE
62.5IRE
Burst
fsc
CW
(Note: fsc±N*fh when the frequency is specified.
N should be a natural number and the nearest value should be used.)
Burst
B-Y only
Burst
R-Y only
40IRE
0.35V
* There is no signal for H, V
blanking period.
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