參數(shù)資料
型號(hào)： LA76810A
廠商： Sanyo Electric Co.,Ltd.
英文描述： Monolithic Linear IC For PAL/NTSC Color Television Sets VIF/SIF/Y/Deflection 1chip IC
中文描述： 單片線性集成電路為PAL / NTSC制式彩電資料表格/應(yīng)力強(qiáng)度因子/年/撓度1chip集成電路
文件頁(yè)數(shù)： 19/40頁(yè)
文件大小： 504K
代理商： LA76810A
www.DataSheet4U.com
LA76810A
NoA0252-19/40
[Chroma block]: PAL/NTSC common
Input signal
Symbol
Test point
Input signal
Test method
Bus bit/input signal
YIN:L77
No signal
Measure the Y system’s output level.
V1
B-Y/Y amplitude
ratio
CLRBY
Bout
21
C-2
Input a signal to the CIN (only sync signal to the
YIN) and measure the output level to calculate as
follows:
CLRBY = 100
×
(V2/V1)+15%
Color: 1000000
Color control
characteristics 1
CLRMN
21
C-1
Measure the output amplitude V1 at color control
MAX mode and output amplitude V2 at color
control CEN mode and, calculate as follows:
CLRMN = V1/V2
Color: 1111111
Color: 1000000
Color control
Characteristics 2
CLRMM
21
C-1
Measure the output amplitude V3 at color control
MIN mode to calculate as follows:
CLRMM = 20log (V1/V3)
Color: 0000000
Color control
sensitivity
CLRSE
21
C-1
Measure the output amplitude V4 at color control
90 mode and output amplitude V5 at color control
38 mode to calculate
as follows:
CLRSE = 100
×
(V4-V5)/(V2
52)
Color: 1011010
Color: 0100110
fsc output level
FSC37
37
Measure 4.43MHz output amplitude at pin 37.
Residual higher
harmonic level B
E_CAR_B
21
C-1
Burst only
Measure the 8.86MHz component output
amplitude at pin 21.
Residual higher
harmonic level R
E_CAR_R
Rout
21
Burst only
Measure the 8.86MHz component output
amplitude at pin 19.
Residual higher
harmonic level G
E_CAR_G
Gout
21
C-1
Burst only
amplitude at pin 20.
[Chroma block]: PAL
Input signal
Symbol
Test point
Input signal
Test method
Bus bit/input signal
ACC amplitude
characteristics 1
ACCM1_P
Bout
21
C-1
0dB
+6dB
Measure the output amplitude when 0dB is
applied to the chroma input and the output
amplitude when +6dB is applied to the chroma
input and calculate the ratio between them.
ACCM1 = 20LOG (+6dBdata/0dBdata)
Color: 1000000
ACC amplitude
characteristics 2
ACCM2_P
Bout
21
C-1
-20dB
Measure the output amplitude when –20dB is
applied to the chroma input and calculate the
ratio between them.
ACCM2 = 20LOG (-20dBdata/0dBdata)
Color: 1000000
Demodulation
output ratio
R-Y/B-Y: PAL
RB_P
21
19
C-1
Refer to 5. and measure Bout output amplitude
Vb and ROUT output amplitude Vr. And calculate
RB = Vr/Vb.
Color: 1000000
Demodulation
output ratio
G-Y/B-Y: PAL
GB_P
21
19
C-4
Measure Bout output amplitude Vbp and GOUT
output amplitude Vgbp. And calculate GB_P =
Vgb-p/Vb-p.
Color: 1000000
Continued on next page.
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