參數(shù)資料
型號(hào)： 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(shù)： 19/39頁
文件大?。?/td> 398K
代理商： LA76832N
LA76832N
No.0069-19/39
Continued from preceding page.
Parameter
Symbol
Test
point
Input
signal
Test method
Bus conditions
[Chroma block] : NTSC
ACC amplitude
characteristics 1
ACCM1_N
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.
ACC amplitude
characteristics 2
ACCM2_N
Bout
21
C-1
-20dB
Demodulation output ratio
R-Y/B-Y : NTSC
Demodulation output ratio
R-Y/B-Y : NTSC
Demodulation angle
B-Y/R-Y : NTSC
Demodulation angle
G-Y/B-Y : NTSC
Killer operating point
RB_N
21
19
C-1
Color : 1000000
GB_N
20
C-1
Refer to 5. and measure GOUT output
amplitude Vg. And calculate GB_N = Vg/Vb.
Color : 1000000
ANGBR_N
21
19
C-1
Refer to 5. and measure the B-Y and R-Y
demodulation angle and calculate.
Reference : B-Y angle
Color : 1000000
ANGGB_N
21
20
C-1
Refer to 5. and measure the B-Y and G-Y
demodulation angle and calculate.
Reference : B-Y angle
Color : 1000000
KILL_N
21
C-1
Reduce the input signal until the output level
becomes 150mVp-p or less. Measure the
input level at that moment.
Decrease the chroma fsc frequency from
3.579545MHz+1000Hz and measure the
frequency at which the VCO locks.
Increase the chroma fsc frequency from
3.579545MHz-1000Hz and measure the
frequency at which the VCO locks.
Measure each part of the output level and
calculate the B-Y axis angle.
Measure each part of the output level and
calculate the B-Y axis angle.
TINT+ = B-Y axis angle -TINCEN
Measure each part of the output level and
calculate the B-Y axis angle.
TINT- = B-Y axis angle -TINCEN
APC pull-in range (+)
PULIN+_N
21
C-1
APC pull-in range (-)
PULIN-_N
21
C-1
Tint center
TINCEN
21
C-1
TINT : 1000000
Tint variable range (+)
TINT+
21
C-1
TINT : 1111111
Tint variable range (-)
TINT-
21
C-1
TINT : 0000000
[Filter Block Chroma BPF Characteristic]
C-BPF1A
Peaker amplitude
characteristic
3.93MHz
CBPF1A
21
C-3
PAL signal
Set the chroma frequency (CW) to
4.433619MHz-100kHz and measure V0
output amplitude. And then, set the chroma
frequency (CW) to 3.93MHz and measure V1
output amplitude to calculate as follows :
CBPF1A = 20Log (V1/V0)
Measure V2 output amplitude when the
chroma frequency (CW) is 4.13MHz and V3
output amplitude when it (CW) is 4.73MHz to
calculate as follows :
CBPF1B = 20Log (V3/V2)
Set the chroma frequency (CW) to 4.93MHz
and measure V4 output amplitude to calculate
as follows :
CBPF1C = 20Log (V4/V1)
FILTER SYS = 0010
C. BYPASS = 0
C-BPF1B
Peaker amplitude
characteristic
4.73/4.13MHz
CBPF1B
21
C-3
PAL signal
FILTER SYS = 0010
C. BYPASS = 0
C-BPF1C
Peaker amplitude
characteristic
4.93/3.93MHz
CBPF1B
21
C-3
PAL signal
FILTER SYS = 0010
C. BYPASS = 0
Continued on next page.
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