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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(yè)數(shù)： | 16/27頁(yè) |
| 文件大?。?/td> | 308K |
| 代理商： | LA76070 |
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Parameter
Symbol
Measurement
point
Input signal
Measurement procedure
Bus and other conditions
[Chroma Block]
Bout
C-1
0 dB
+6 dB
Measure the output amplitudes when the
chrominance signal input is 0 dB and when
that input is +6 dB and calculate the ratio.
ACCM1 = 20
×
log (+6 dBdata/0dBdata)
Measure the output amplitude when the
chrominance signal input is –14 dB and
calculate the ratio.
ACCM2 = 20
×
log (–14 dBdata/0dBdata)
ACC amplitude characteristic 1
ACCM1
Bout
ACC amplitude characteristic 2
ACCM2
C-1
–14 dB
YIN: L77
C-1:
No signal
Measure the Y output level
(Record this measurement as V1)
B-Y/Y amplitude ratio
CLRBY
Next, input a signal to CIN, and (with YIN a
sync-only signal) measure the output level.
(Record this measurement as V2)
Calculate CLRBY from the following formula.
CLRBY = 100
×
(V2/V1) + 15%
C-2
Measure V1: the output amplitude when the
color control is maximum, and V2: the output
amplitude when the color control is nominal.
Calculate CLRMN as V1/V2.
TR24:
Saturation
01111111
Saturation
01000000
Color control characteristic 1
CLRMN
C-3
Measure V3: the output amplitude when the
color control is minimum. Calculate CLRMM
as CLRMN = 20
×
log (V1/V3).
Measure V4: the output amplitude when the
color control is 90, and V5: the output amplitude Saturation
when the color control is 38. Calculate CLRSE
from the following formula.
CLRSE = 100
×
(V4 – V5)/(V2
×
52)
Measure all sections of the output waveform
and calculate the B-Y axis angle
TR28:
Saturation
00000000
Color control characteristic 2
CLRMN
C-3
TR24:
Color control sensitivity
CLRSE
C-3
01011010
Saturation
00100110
Tint center
TINCEN
C-1
TR23: Tint
00111111
Measure all sections of the output waveform,
calculate the B-Y axis angle, and calculate
TINMAX from the following formula.
TINMAX = <the B-Y axis angle> – TINCEN
Tint control maximum
TINMAX
C-1
TR23: Tint
01111111
Measure all sections of the output waveform,
calculate the B-Y axis angle, and calculate
TINMIN from the following formula.
TINMIN = <the B-Y axis angle> – TINCEN
Tint control minimum
TINMIN
C-1
TR23: Tint
00000000
Measure A1: the angle when the tint control is 85,
and A2: the angle when the tint control is 42,
and calculate TINSE from the following formula.
TINSE = (A1 – A2) /43
TR23: Tint
01010101
00101010
Tint control sensitivity
TINSE
C-1
Demodulation output ratio
R-Y/B-Y
RB
C-3
Measure Vb: the B
OUT
output amplitude,
and Vr: the R
OUT
output amplitude.
Determine RB = Vr/Vb.
TR24:
Saturation
01000000
Demodulation output ratio
G-Y/B-Y
Measure Vg: the G
OUT
output amplitude and
determine GB = Vg/Vb
TR24:
Saturation
01000000
GB
C-3
No. 5844-16/27
LA76070
Continued on next page.
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相關(guān)PDF資料 |
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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