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參數資料
型號： LA71750EM
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： 14 X 20 MM, QFP-100
文件頁數： 34/46頁
文件大小： 898K
代理商： LA71750EM
LA71750EM
No.7952-4/46
PB Mode Y
Input signal
Input/Output point
Ratings
Parameter
Symbol
Signal
Level
In
Out
Conditions
min
typ
max
Unit
Current Dissipation
2 (PB)
ICCP
Sum
of
each
VCC
pin
Measure the sum of currents flowing into pins 18,
24, 42, 55, 72, 91.
150
190
230
mA
4V Regulator (PB)
REG4P
T47
Measure the T47 D.C. voltage
3.9
4.1
4.3
V
Non-Linear
De-Emphasis
Characteristic 1
NLDEEM1
SG2
f=2MHz
SG5
f=4MHz
A = 150
B = 175
C = 158
300
T74A
T79A
T65
Input Y signal (A = 150mVp-p, B =
175mVp-p, C = 158mVp-p, f =
2MHz) and CW signal (4MHz,
300mVp-p) to T74A and T79A
respectively, and measure the
input/output response.
Y-TEST2 mode (YNR, ANR and
NC are off. Picture control is center.)
Serial
01
10
11
-3
-3.0
-2.0
-1.0
-1
dB
Non-Linear
De-Emphasis
Characteristic 2
NLDEEM2
SG2
f=2MHz
SG5
f=4MHz
A = 150
B = 175
C = 50
300
T74A
T79A
T65
Input Y signal (A = 150mVp-p, B =
175mVp-p, C = 50mVp-p, f=2MHz)
and CW signal (4MHz, 300mVp-p)
to T74A and T79A respectively,
and measure the input/output
response.
Y-TEST2 mode (YNR, ANR and
NC are off. Picture control is center.)
Serial
01
10
11
-5.5
-3.5
-2.5
-2.0
dB
High Pass Noise
Canceler 1
HPNC1
SG2
f=1.4MHz
SG5
f=4MHz
A = 150
B = 175
C = 158
300
T74A
T79A
T65
Input Y signal (A = 150mVp-p, B =
175mVp-p, C = 158mVp-p, f =
1.4MHz) and CW signal (4MHz,
300mVp-p) to T74A and T79A
respectively, and measure the 1.4
MHz element of output level (=C) at
T65.
Y-TEST3 mode (YNR and NL are
off. Picture control is center.)
Serial
00
01
10
11
-2.5
-1.0
-1.5
-2.0
-2.5
-0.5
dB
High Pass Noise
Canceler 2
HPNC2
SG2
f=1.4MHz
SG5
f=4MHz
A = 150
B = 175
C = 50
300
T74A
T79A
T65
Input Y signal (A = 150mVp-p, B =
175mVp-p, C = 50mVp-p, f =
1.4MHz) and CW signal (4MHz,
300mVp-p) to T74A and T79A
respectively, and measure the 1.4
MHz element of output level (=C) at
T65.
Y-TEST3 mode (YNR and NL are
off. Picture control is center.)
Serial
00
01
10
11
-7
-3
-5
-7
-9
-3
dB
High Pass Noise
Canceler 3
HPNC3
SG2
f=1.4MHz
SG5
f=4MHz
A = 150
B = 175
C = 15.8
300
T74A
T79A
T65
Input Y signal (A = 150mVp-p, B =
175mVp-p, C = 15.8mVp-p, f =
1.4MHz) and CW signal (4MHz,
300mVp-p) to T74A and T79A
respectively, and measure
the1.4MHz element of output level
(=C) at T65.
Y-TEST3 mode (YNR and NL are
off. Picture control is center.)
Serial
00
01
10
11
-15
-7
-13
-20
-25
-20
dB
Reponse
Characteristic
when Picture
Control Hard (+3dB)
PICHD
SG2
f=2.5MHz
SG5
f=4MHz
A = 150
B = 175
C = 158
300
T74A
T79A
T65
Input Y signal (A = 150mVp-p, B = 175mVp-p, C =
158mVp-p, f = 2.5MHz) and CW signal (4MHz,
300mVp-p) to T74A and T79A respectively, and
measure the 2.5 MHz element of output level
(=C) at T65.
Picture control must be +6dB.
Y-TEST2 mode (YNR, NL and NC are off.)
4.0
5.0
6.0
dB
Continued on next page.
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