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參數資料
| 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： | 23/43頁 |
| 文件大小： | 1533K |
| 代理商： | LA71578HM |
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LA71598HM
No.A0643-3/44
Continued from preceding page.
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
Y LPF frequency
characteristics (4)
YLPF4
T38A
T21
With VIN a standard multi-burst signal (1Vp-p)
measure the 4.43MHz response to a 500kHz signal
on T21.
-25
dB
Y LPF frequency
characteristics (5)
YLPF5
T38A
T21
With VIN a standard multi-burst signal (1Vp-p),
measure the 3.58MHz response to a 500kHz signal
on T21.
-25
dB
FM modulator output
level
VFM
T12
Measure the T12 output level with no input. Serial
00
01
10
11
270
300
330
360
mVp-p
Carrier frequency
(PAL/MESECAM/SEC
AM)
FFM1
T12
Measure the output frequency on T12 with no input.
3.725
3.80
3.875
MHz
REC-FM output
second distortion
HMOD
T12
Measure the second distortion with the above state.
-40
-35
dB
Deviation
(PAL/MESECAM/SEC
AM)
DEV1
T38A
T12
With VIN a 100% white 1Vp-p signal, measure the
deviation on T12.
0.95
1.00
1.05
MHz
White peak Frequency
FWP
T38A
T12
With VIN a 100% white 1Vp-p signal,
measure the White peak frequency on T12.
4.7
4.8
4.9
MHz
FM modulator linearity
LMOD
T20
T12
Let f2.85 be the output frequency when 2.85VDC is
applied to T20.
LMOD =
×100
-2
0
2
%
1/2 fH carrier shift
CS
T12
The output frequency change
6.5
8.2
9.5
kHz
Emphasis gain
GEMP
T20A
T18
With VIN a 500mVp-p 10kHz sine wave, measure the
ratio of the levels on T20A and T18.
-0.75
-0.25
0.25
dB
Detail enhancer
Characteristics (1)
GENH1
T20A
T18
With VIN a 158mVp-p 2MHz sine wave,
measure the ratio of the levels on T20A
and T18, and take the difference with
GEMP.
Serial
000: MIN
↑↓
100: TYP
↑↓
111: MAX
1.0
1.5
2.0
dB
Detail enhancer
Characteristics (2)
GENH2
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.
Serial
000: MIN
↑↓
100: TYP
↑↓
111: MAX
3.0
4.0
5.0
dB
Detail enhancer
Characteristics (3)
GENH3
T20A
T18
With VIN a 15.8mVp-p 2MHz sine wave,
measure the ratio of the levels on T20A
and T18, and take the difference with
GEMP.
Serial
000: MIN
↑↓
100: TYP
↑↓
111: MAX
4.3
5.8
7.3
dB
Nonlinear emphasis
Characteristics (1)
GNLEMP1
T20A
T18
With VIN a 500mVp-p 2MHz sine wave,
measure the ratio of the levels on T20A
and T18, and take the difference with
GEMP. (Y-TEST)
Serial
01: MAX
10: TYP
11: MIN
0.5
dB
Nonlinear emphasis
Characteristics (2)
GNLEMP2
T20A
T18
With VIN a 158mVp-p 2MHz sine wave,
measure the ratio of the levels on T20A
and T18, and take the difference with
GEMP. (Y-TEST)
Serial
01: MAX
10: TYP
11: MIN
4
dB
Nonlinear emphasis
Characteristics (3)
GNLEMP3
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)
Serial
01: MAX
10: TYP
11: MIN
6
dB
Continued on next page.
f2.85-(f3.1+f2.6)/2
f3.1-f2.6
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