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參數資料
| 型號： | LC074146LP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, AUDIO/VIDEO AMPLIFIER, QCC40 |
| 封裝： | 5 X 5 MM, VQLP-40 |
| 文件頁數： | 13/14頁 |
| 文件大小： | 524K |
| 代理商： | LC074146LP |
LA71582M
No.A0221-8/38
Continued from preceding page.
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
PB killer-on input level
VACK-P
T74A
T20A
T72
With the conditions used for Vop-29, the input chroma
level until output from T72 cease and measure the
input burst level at that point.
(Calculate the ratio with the standard input 50mVp-p
signal)
-25
dB
PB killer-on chroma
output level
VOACK-P
T74A
T20A
T29
Measure the T29 chroma output with a spectrum
analyzer in the killer state of the previous item.
Calculate its ratio with PVop-29.
-44
-40
dB
PB main converter
carrier leakage
CLP
T74A
T20A
T29
With the conditions used for PVop-29, measure the
T29 with a spectrum analyzer, and calculate the ratio
of the 4.43MHz component and the 5.06MHz carrier
leakage component.
-40
-33
dB
Burst de-emphasis
NTSC MODE
GBD
T1A
T10A
T63A
T13
Input a 3.58MHz 200mVp-p CW to T63A
and a 4MHz 300mVp-p CW to T1A.
Input a 50% white signal to T10A.
Calculate the ratio of T13 burst period
output level and the output level during
other periods.
Serial
0
1
-5.0
-5.5
dB
PB XO output level
PAL MODE
VXO-PP
T69A In PB mode, measure the output level on T69 with an
FET probe.
300
500
700
mVp-p
PB XO output level
NTSC MODE
VXO-PN
T67A
In PB mode, measure the output level on T67 with an
FET probe.
300
500
700
mVp-p
PB XO oscillator
frequency deviation
PAL MODE
fXOP
T69A In PB mode, let f be the measured frequency on T69.
fXOP = f-4433619 (Hz)
-9
0
+9
Hz
PB XO oscillator
frequency deviation
NTSC MODE
fXON
T67A
In PB mode, let f be the measured frequency on T67.
fXON = f - 3579545(Hz)
-7
0
+7
Hz
NTSC
→ PAL
conversion
V axis Burst level
VBNAP
T1A
T10A
T27
Input a chroma signal that is a lower frequency
converted chroma noise test signal (SP mode, burst
100mVp-p) to T1A.
Input a 4MHz 300mVp-p sine wave to T1A, and a
50% white signal to T10A.
Measure the T27-45
° Burst level, and take the ratio
with the PVOP-27.
-2
-1
0
dB
NTSC
→ PAL
conversion
Ratio of the Burst level
B-NAP
T1A
T10A
T27
With the same condition above, measure the Burst
level, and take the ratio with VBNAP.
-2
0
2
dB
PB Chroma 2nd
harmonic distortion
PTHD2
T1A
T10A
T27
With the conditions used for PVOP-27, measure the
T27 with a spectrum analyzer, and calculate the ratio
of the 4.43MHz component and the 8.86MHz
component.
-25
dB
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