參數資料
型號： LA76832N
廠商： Sanyo Electric Co.,Ltd.
英文描述： Monolithic Linear IC I2C Bus Control IC
中文描述： 單片線性集成電路I2C總線控制IC
文件頁數： 18/39頁
文件大?。?/td> 398K
代理商： LA76832N
LA76832N
No.0069-18/39
Parameter
Symbol
Test
point
Input
signal
Test method
Bus conditions
[Chroma block] : PAL/NTSC common
YIN : L77
CIN : No signal
C-2
Measure the Y system’s output level.
V1
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%
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
Measure the output amplitude V3 at color
control MIN mode to calculate as follows :
CLRMM = 20Log (V1/V3)
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)
Measure the 8.86MHz component output
amplitude at pin 21.
Measure the 8.86MHz component output
amplitude at pin 19.
B-Y/Y amplitude ratio
CLRBY
Bout
21
Color : 1000000
Color control
characteristics 1
CLRMN
21
C-1
Color : 1111111
Color : 1000000
Color control
characteristics 2
CLRMM
21
C-1
Color : 0000000
Color control sensitivity
CLRSE
21
C-1
Color : 1011010
Color : 0100110
Residual higher
harmonic level B
Residual higher harmonic
level R
Residual higher harmonic
level G
[Chroma block] : PAL
E_CAR_B
21
C-1
Burst only
Burst only
E_CAR_R
Rout
19
E_CAR_G
Gout
20
C-1
Burst only
Measure the 8.86MHz component output
amplitude at pin 20.
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)
Measure the output amplitude when -20dB is
applied to the chroma input and calculate the
ratio between them.
ACCM2 = 20Log (-20dBdata/0dBdata)
Refer to 5. and measure Bout output
amplitude Vb and ROUT output amplitude Vr.
And calculate RB = Vr/Vb.
Color : 1000000
ACC amplitude
characteristics 2
ACCM2_P
Bout
21
C-1
-20dB
Color : 1000000
Demodulation output ratio
R-Y/B-Y : PAL
Demodulation output ratio
G-Y/B-Y : PAL
Demodulation output ratio
G-Y/R-Y : PAL
Demodulation angle
R-Y/B-Y : PAL
APC pull-in range (+)
RB_P
21
19
C-1
Color : 1000000
GB_P
21
20
C-4
Measure Bout output amplitude Vbp and
GOUT output amplitude Vgbp. And calculate
GB_P = Vgbp/Vbp.
Color : 1000000
GB_P
20
19
C-5
Measure ROUT output amplitude Vrp and
GOUT output amplitude Vgbp. And calculate
GR_P = Vgrp/Vrp.
Color : 1000000
ANGBR_P
21
19
C-1
Refer to 5. and measure the B-Y and R-Y
demodulation angle and calculate.
Color : 1000000
PULIN+_P
21
C-1
Decrease the chroma fsc frequency from
4.433619MHz+1000Hz and measure the
frequency at which the VCO locks.
Increase the chroma fsc frequency from
4.433619MHz-1000Hz and measure the
frequency at which the VCO locks.
APC pull-in range (-)
PULIN-_P
21
C-1
Continued on next page.
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