參數(shù)資料
型號： LA71750EM
廠商： SANYO SEMICONDUCTOR CO LTD
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： 14 X 20 MM, QFP-100
文件頁數(shù)： 44/46頁
文件大小： 898K
代理商： LA71750EM
LA71750EM
No.7952-7/46
Continued from preceding page.
Input signal
Input/Output point
Ratings
Parameter
Symbol
Signal
Level
In
Out
Conditions
min
typ
max
Unit
PB-EQ
characteristics 1-1
4MHz 300mVp-p
GREQ11
SG1
f=4MHz,
300mVp-p
A=150mVp-p
B=350mVp-p
T79A
T74A
T76A With VIN a CW 4MHz, 300mVp-p signal,
measure the input/output response.
T77 : DC1.6V
-1
dB
PB-EQ second
distortion
4MHz 300mVp-p
HPEQ
SG1
f=4MHz,
300mVp-p
A=150mVp-p
B=350mVp-p
T79A
T74A
T76A Measure the second distortion with the above
state.
-40
-30
dB
PB-EQ
characteristics 2-2
650kHz 300mVp-p
GPEQ22
SG1
f=650kHz,
300mVp-p
A=150mVp-p
B=350mVp-p
T79A
T74A
T76A Measure the input/output response,and take
the difference with GPEQ1.
T77 : DC1.6V
-25
dB
PB-EQ
characteristics 3-1
8.5MHz TRAP
GPEQ31
SG1
f=7.5MHz,
300mVp-p
A=150mVp-p
B=350mVp-p
T79A
T74A
T76A Measure the input/output response,and take
the difference with GPEQ1.
T77 : DC1.6V
-25
dB
PB-EQ
characteristics 3-2
9.5MHz TRAP
GPEQ32
SG1
f=9.5MHz,
300mVp-p
A=150mVp-p
B=350mVp-p
T79A
T74A
T76A Measure the input/output response,and take
the difference with GPEQ1.
T77 : DC1.6V
-25
dB
REC Mode Chroma
Input signal
Input/Output point
Ratings
Parameter
Symbol
Signal
Level
In
Out
Conditions
min
typ
max
Unit
REC chroma low
frequency conversion
output level
SP MODE
PRB
SG3
(PAL)
A : 300
B : 700
C : 700
D : 300
T48A
T21
With the 100% chroma signal, measure the
burst level on T21B.
190
220
250
mVp-p
REC ACC
characteristics (+6dB)
RACC+
SG3
(PAL)
A : 300
B : 700
C : 700
D : 600
T48A
T21
With the 100% chroma signal, increase only
the burst signal level by +6dB, measure the
T21 burst level, and calculate its ratio with
PRB.
0.2
0.5
dB
REC ACC
characteristics (-6dB)
RACC-
SG3
(PAL)
A : 300
B : 700
C : 700
D : 150
T48A
T21
With the 100% chroma signal, decrease only
the burst signal level by -6dB, measure the T21
burst level, and calculate its ratio with PRB.
-0.5
-0.1
dB
REC ACC killer-on
input level
VACCK-
ON
SG3
(PAL)
A : 300
B : 700
C : 700
T48A
T21
With the 100% chroma signal, decrease only
the burst signal until the T21 output ceases,
and measure the input burst level at the time.
Calculate the ratio of this value with the
standard input level.
-26
dB
REC ACC killer-on
output level
VOACCK SG3
(PAL)
A : 300
B : 700
C : 700
T48A
T21
Measure the T21 output level with a spectrum
analyzer in the killer state of the above item,
and calculate its ratio with PRC.
-60
-50
dB
REC ACC killer
restored input level
VACCK-
OFF
SG3
(PAL)
A : 300
B : 700
C : 700
T48A
T21
From the killer state of the above item,
gradually increase the burst signal until the T21
output reappears, and measure the input burst
level at the time. Calculate its ratio with the
standard input level.
-20
dB
REC APC pull-in
range (1)
PAL
APC1
SG1
+
SG5
A : 300
B : 700
300
T48A
T21
Input a signal consisting of a 4.4336MHz CW
added to a 50% white signal. After confirming
that a signal is output from T21, increase the
CW frequency until T21 output ceases. Now
slowly reduce the CW frequency, and let f1 be
the frequency at which the T21 output
reappears.
Δ fAPC1 = f1 - 4433619 (Hz)
350
Hz
Continued on next page.
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