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參數(shù)資料
| 型號(hào)： | LA76070 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | NTSC Color Television IC |
| 中文描述： | NTSC制式彩色電視芯片 |
| 文件頁數(shù)： | 17/27頁 |
| 文件大?。?/td> | 308K |
| 代理商： | LA76070 |
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Continued from preceding page.
No. 5844-17/27
LA76070
Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus and other conditions
Measure the B
OUT
and R
OUT
output levels,
calculate the angles of the B-Y and R-Y axes,
and determine ANGBR as
<the R-Y angle> – <the B-Y angle>.
Demodulation angle B-Y/R-Y
ANGBR
C-1
Measure the G
OUT
output level, calculate the
angle of the G-Y axis, and determine ANGBG
as <the G-Y angle> – <the B-Y angle>
Demodulation angle B-Y/G-Y
ANGBG
C-1
Gradually lower the input signal level, and
measure the input signal level at the point the
output level falls under 150 mV p-p
Killer operating point
KILL
C-3
Chrominance VCO free-running
frequency
CIN
Measure the oscillator frequency f, and
determine CVCOF from the following formula.
CVCOF = f – 3579545 (Hz)
CVCOF
No signal
Gradually lower the input signal subcarrier
frequency starting from 3.57545 MHz +
2000 Hz, and measure the frequency when
the output waveform locks
Chrominance pull-in range (+)
PULIN +
C–1
Gradually raise the input signal subcarrier
frequency starting from 3.57545 MHz –
2000 Hz, and measure the frequency when the
output waveform locks
Chrominance pull-in range (–)
PULIN –
C–1
With Auto Flesh = 0, measure the level that
corresponds to 73° for the B
OUT
and R
OUT
output waveforms, and calculate the angle
AF073A.
With Auto Flesh = 1, determine the angle
AF073B in the same way.
Calculate AF073 from the following formula.
AF073 = AF073B – AF073A
TR22:
Auto flesh:
0
*******
TR22:
Auto flesh:
1
*******
Auto flesh characteristic 73°
AF073
C–4
With Auto Flesh = 0, measure the level that
corresponds to 118° for the B
OUT
and R
OUT
output waveforms, and calculate the angle
AF118A.
With Auto Flesh = 1, determine the angle
AF118B in the same way.
Calculate AF118 from the following formula.
AF118 = AF118B – AF118A
TR22:
Auto flesh:
0
*******
TR22:
Auto flesh:
1
*******
Auto flesh characteristic 118°
AF118
C–4
With Auto Flesh = 0, measure the level that
corresponds to 163° for the B
OUT
and R
OUT
output waveforms, and calculate the angle
AF163A.
With Auto Flesh = 1, determine the angle
AF163B in the same way.
Calculate AF163 from the following formula.
AF163 = AF163B – AF163A
TR22:
Auto flesh:
0
*******
TR22:
Auto flesh:
1
*******
Auto flesh characteristic 163°
AF163
C–4
30
28
29
30
15
30
30
30
28
30
28
30
28
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PDF描述 |
|---|---|
| LA76075 | NTSC Color Television Sets |
| LA7615 | Single-Chip NTSC Color TV IC |
| LA7620 | Color TV Video, Chroma, Deflection Circuit |
| LA7625 | Video, Chroma and Deflection Circuit for Color Television Sets |
| LA7629 | Color TV/Video,Chroma,Deflection Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA76075 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:NTSC Color Television Sets |
| LA7612A | 制造商:SANYO Semiconductor Co Ltd 功能描述: |
| LA7615 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip NTSC Color TV IC |
| LA7620 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Color TV Video, Chroma, Deflection Circuit |
| LA7621 | 制造商:Panasonic Industrial Company 功能描述:IC |
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