參數資料
型號： LC074146LP
廠商： SANYO SEMICONDUCTOR CO LTD
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： 11/14頁
文件大?。?/td> 524K
代理商： LC074146LP
LA71582M
No.A0221-6/38
Continued from preceding page.
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
PB EQ High-Trap
characteristics 2
*Serial control
FPEQ2
T74
T18
VIN =300mVp-p
Measure the High-band Trap frequency and gain.
(Using network analyzer)
Serial
00 (10M)
01 ( 9M)
10 ( 8M)
11 ( 7M)
-25
dB
REC Mode Chroma
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
REC chroma low
frequency conversion
output level
VOR-72
T38A
T72
With VIN the standard color bar signal
(1Vp-p), measure the burst level on T72.
Serial
00
01
10
11
225
190
160
135
mVp-p
Burst emphasis
NTSC MODE
GBE
T38A
T72
With VIN the standard color bar signal(1Vp-p),
calculate the ratio of the T72 burst levels for SP/EP
and LP modes.
5.5
6.0
6.5
dB
VXO oscillation level
PAL MODE
VVXO-RP
T38A
T69A With VIN the standard color bar signal (1Vp-p),
measure the T69A output amplitude with an FET
probe.
300
500
700
mVp-p
VXO oscillation level
NTSC MODE
VVXO-RN
T38A
T67A With VIN the standard color bar signal (1Vp-p),
measure the T67A output amplitude with an FET
probe.
300
500
700
mVp-p
REC ACC
Characteristics (1)
ACCR1
T38A
T72
With VIN the standard color bar signal (1Vp-p),
increase only the chroma signal level by +6dB,
measure the T72 burst level, and calculate its ratio
with VOR-2.
+0.2
+0.5
dB
REC ACC
characteristics (2)
ACCR2
T38A
T72
With VIN the standard color bar signal (1Vp-p),
decrease only the chroma signal level by -6dB,
measure the T72 burst level, and calculate its ratio
with VOR-2.
-0.5
-0.1
dB
REC ACC killer-on
input level
VACCK-ON
T38A
T72
With VIN the standard color bar signal (1Vp-p),
decrease the chroma signal and measure the input
burst level at the point that T72 output ceases.
Calculate the ratio of this value with the standard
input level.
-26
dB
REC ACC killer-on
output level
VOACCK
T38A
T72
Measure the T72 output level with a spectrum
analyzer in the killer state of the above item and
calculate its ratio with VOR-2.
-60
-50
dB
REC ACC killer
restored input level
VACCK-OFF
T38A
T72
From the killer state of the above item gradually
increase the input chroma level and T72 output
reappears.
Calculate its ratio with the standard input level.
-20
dB
REC APC pull-in
range (1)
PAL MODE
fNAPC1
T38A
T72
Input a signal consisting of a 4.43361875MHz,
300mVp-p CW added to a 50% white signal. After
confirming that a signal is output from T72, increase
the CW frequency until T72 output ceases.
Now slowly reduce the CW frequency, and let f1 be
the frequency at which T72 output reappears.
fNAPC1 = f1-4433618.75 (Hz)
300
Hz
REC APC pull-in
range (2)
PAL MODE
fNAPC2
T38A
T72
As in the previous item, decrease the CW frequency
until T72 output ceases.
Now, slowly increase the CW frequency and let f2 be
the frequency at which T72 output reappears.
fAPC2 = f2-4433618.75 (Hz)
-300
Hz
Continued on next page.
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