參數(shù)資料
型號(hào)： LA7615
廠商： Sanyo Electric Co.,Ltd.
英文描述： Single-Chip NTSC Color TV IC
中文描述： 單片集成電路NTSC制式彩電
文件頁(yè)數(shù)： 25/39頁(yè)
文件大小： 206K
代理商： LA7615
No. 5841-25/39
LA7615
(Test Conditions)
Parameter
Symbol
Test point
Input signal
Test procedure
Bus condition
[Chrominance Block]
ACC amplitude characteristics 1
ACC amplitude characteristics 2
B-Y/Y amplitude ratio
Color control characteristics 1
Color control characteristics 2
Color control sensitivity
Tint center
Tint control (max)
Tint control (min)
Tint control sensitivity
Demodulation output ratio
B-Y/R-Y
Demodulation output ratio
G-Y/R-Y
ACC
M
1
ACC
M
2
CLR
BY
CLR
MN
CLR
MM
CLR
SE
TIN
CEN
TIN
MAX
TIN
MIN
TIN
SE
BR
GR
Bout
Bout
C-1
0 dB
+6 dB
C-1
–14 dB
Y
IN
: L77
C-1: No signal
C-2
C-3
C-3
C-3
C-1
C-1
C-1
C-1
C-3
C-3
Measure the output amplitude when the
chrominance input is set to 0 dB and the output
amplitude when the input is reduced by – 6 dB, and
calculate the ratio.
ACC
M
1 = 20log(+6 dB data/0 dB data)
Measure the output amplitude when the
chrominance input is set to –14 dB and calculate the
ratio.
ACC
M
2 = 20log(–14 dB data/0 dB data)
Measure the luminance (Y) output level(V1).
Next, apply a signal to the C
IN
input (with only a sync
applied to the Y input) and measure the output level
(V2). Calculate the following formula.
CLR
BY
= 100
×
(V2/V1) +15%
Measure V1: the output amplitude when the color
control is maximum, and V2: the output amplitude
when the color control is normal (Color control:
1000000) and calculate CLR
MN
= V1/V2.
Measure V3: the output amplitude when the color
control is minimum and calculate CLR
MM
=
20·log(V1/V3).
Measure V4: the output amplitude when the color
control is 90, and V5: the output amplitude when the
color control is 38. Calculate the following formula.
CLR
SE
= 100
×
(V4 – V5) / (V2
×
52)
Measure each section of the output waveform and
calculate the angle of the B-Y axis.
Measure each section of the output waveform and
calculate the angle of the B-Y axis. Calculate the
following formula.
TIN
MAX
= (the B-Y axis angle) – TIN
CEN
Measure each section of the output waveform and
calculate the angle of the B-Y axis. Calculate the
following formula.
TIN
MIN
= (the B-Y axis angle) – TIN
CEN
Measure A1: the angle when the tint control is 85,
and A2: the angle when the tint control is 42.
Calculate the following formula.
TIN
SE
= (A1 – A2)/43
Measure Vb: the B
OUT
output amplitude and Vr: the
R
OUT
output amplitude, and calculate BR = Vb/Vr.
Measure Vg: the G
OUT
output amplitude and
calculate GR = Vg/Vr.
TR28: Color Control
1111111
1000000
TR28: Color Control
0000000
TR28: Color Control
1011010
Color Ctontrol
0100110
TR27: TINT
0111111
TR27: TINT
1111111
TR27: TINT
0000000
TR27: TINT
1010101
0101010
TR28: Color Control
1000000
TR28: Color Control
1000000
38
38
38
38
38
38
38
38
38
38
38
36
37
Continued on next page.
相關(guān)PDF資料
PDF描述
LA7620 Color TV Video, Chroma, Deflection Circuit
LA7625 Video, Chroma and Deflection Circuit for Color Television Sets
LA7629 Color TV/Video,Chroma,Deflection Circuit
LA7640N Chroma Circuit for SECAM-system Color Television Sets
LA7642N SECAM Format Color TV Chrominance Circuit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
LA7625 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video, Chroma and Deflection Circuit for Color Television Sets
LA7626 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Video, Chroma and Deflection Circuit for Color Television Sets
LA7629 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Color TV/Video,Chroma,Deflection Circuit
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