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參數(shù)資料
| 型號： | LA71578HM |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | 14 X 20 MM, QIP-100 |
| 文件頁數(shù)： | 34/43頁 |
| 文件大小： | 1533K |
| 代理商： | LA71578HM |
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LA71598HM
No.A0643-4/44
Continued from preceding page.
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
Main linear emphasis
Characteristics (1)
GME1
T20A
T18
With VIN a 50mVp-p 500kHz sine wave, measure the
ratio of the levels on T20A and T18, and take the
difference with GEMP. (Y-TEST)
11.0
dB
Main linear emphasis
Characteristics (2)
GME2
T20A
T18
With VIN a 50mVp-p 2MHz sine wave, measure the
ratio of the levels on T20A and T18, and take the
difference with GEMP. (Y-TEST)
13.1
13.6
14.1
dB
White clipping level
LWC
T38A
T18
With VIN a 1.0Vp-p 100% white video
signal, measure the white clipping level
on T18. (Y-TEST)
Serial
0
1
185
195
%
Dark clipping level
LDC
T38A
T18
With VIN a 1.0Vp-p 100% white video
signal, measure the dark clipping level on
T18. (Y-TEST)
Serial
0
1
-52
-57.5
%
PB Mode Y
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
Current dissipation
(PB)
ICCP
Measure the sum of currents flowing into pins 40, 16,
58, 87, 75.
185
200
215
mA
Dropout compensation
Period
*1H for one horizontal
synchronization period
TDOC
T74
T20A
T29
T74:
4MHz 300mVp-p sine wave
T20A: 0.5Vp-p video signal
The time between the instant the T74A input set to
and the point T29 output is restored.
10.5
12.5
14.5
H
DOC characteristics
GDOC
T74
T20A
T29
T74:
4MHz 300mVp-p sine wave
T20A: 0.5Vp-p video signal
The I/0 response 5H after the T74A input is set to 0.
-1.5
0
1.5
dB
PB Y level
V-YOUT
T74
T29
DEV = 1.0MHz PB Y level when input FM signal.
2.00
2.10
2.20
Vp-p
Over all Y level
R/P-OUT
T74
T29
R/P-Y level, PB-Y level
1.93
2.10
2.27
Vp-p
FM demodulator
linearity
LDEM
T74
T21
LDEM =
×100
*VDEM4 = DC: T21 (Input 4MHz, 300mVp-p)
-3.5
0
+3.5
%
Carrier leakage
CL
T74
T21
Measure the ratio of the 4MHz component on T21
and SDEM.
-35
dB
PB YNR
characteristics
PYNR
T20A
T29
Measure the ratio of the 32fH
component and 32.5fH.
Serial
00 (OFF)
01 (STD)
10 (MID)
11 (STG)
0
-3.2
-8.2
-11.8
dB
DOC level
LDOC
T74
T29
Measure the level of D.O.C when 300mVp-p is set to
0dB with VIN = 4MHz.
-16
dB
DOC stop level
LDOS
T74
T29
Measure the level when D.O.C stops when the VIN =
4MHz signal is entered.
100
mVp-p
Nonlinear de-emphasis
characteristics (1)
GNLDE1
T20A
T29
With VIN a 50% white video +2MHz
158mVp-p sine wave, measure the I/O
response.
(Y-TEST)
Serial
01: MAX
10: TYP
11: MIN
-3.5
-2.5
-1.5
dB
Nonlinear de-emphasis
characteristics (2)
GNLDE2
T20A
T29
f = 2MHz, 50mVp-p
(Y-TEST)
Serial
01: MAX
10: TYP
11: MIN
-6.0
-4.5
-3.0
dB
Double
noisecanceller
characteristics (1)
GWNC1
T20A
T29
f = 1.4MHz, 158mVp-p
Serial
000: MIN
100: TYP
111: MAX
-3.5
-2.5
-1.5
dB
Double
noisecanceller
characteristics (2)
GWNC2
T20A
T29
f = 1.4MHz, 50mVp- p
Serial
000: MIN
100: TYP
111: MAX
-12
-10
-8
dB
Continued on next page.
VDEM4-(VDEM3+VDEM5)/2
VDEM5-VDEM3
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