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參數(shù)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(shù)： | 46/46頁 |
| 文件大?。?/td> | 898K |
| 代理商： | LA71750EM |
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LA71750EM
No.7952-9/46
Continued from preceding page.
Input signal
Input/Output point
Ratings
Parameter
Symbol
Signal
Level
In
Out
Conditions
min
typ
max
Unit
NAP-45DEG
NTSC
→PAL
conversion V axis
Burst level.
BNAP1P
SG6
DC
SG9
(NT)
300
3.5V
C : 100
D : 125
T79A
T21B
T25
Input a chroma signal that is a lower frequency
converted chroma noise test signal (SP mode,
burst 100mVp-p) to T21B. Input a FM signal
300mVp-p to T79A.
Measure the T25 -45
° burst level, and take the
ratio with the COPPABSP.
-2
0
2
dB
NAP+45DEG
NTSC
→PAL
conversion ratio of the
Burst leve
BNAP2P
SG6
DC
SG9
(NT)
300
3.5V
C : 100
D : 125
T79A
T21B
T25
With the same condition above, measure the
burst level, and take the ratio with BNAP1P.
-2
0
2
dB
REC/PB Mode Audio
Input signal
Input/Output point
Ratings
Parameter
Symbol
Signal
Level
In
Out
Conditions
min
typ
max
Unit
LINE AMP Voltage
gain
VGLR1
SG5
1kHz
-28dBm T13A
T15A
T17A
T11A
23.4
23.9
24.2
dB
LINE AMP Output
level when ALC
VOA
SG5
1kHz
-25dBm T13A
T11A
-4.8
-3.8
-2.8
dBm
LINE AMP Distortion
when ALC
THDA
SG5
1kHz
-25dBm T13A
T11A
0.01
0.1
0.5
%
LINE AMP ALC effect
ALCE
SG5
1kHz
-5dBm
T13A
T11A
0.0
0.5
3.0
dB
MUTE attenuation
MEE
MPB
SG5
1kHz
-5dBm
T13
/T15
T17
/T9
T11A AD-MUTE is High
80
90
120
dB
Current dissipation
(REC)
ICCRA
No-
Signal
T18
10
12
14
mA
REC AMP Voltage
gain 1
VGR1
SG5
1kHz
-30dBm T13A
T11A
T100A
Confirm the different level between T11A and
T100A
3.5
4
4.5
dB
REC AMP Distortion
ratio
THDR
SG5
1kHz
-30dBm T13A T100A
0.01
0.1
0.5
%
REC AMP Maximum
output voltage
VOMR
SG5
1kHz
-5dBm
T13A T100A
0.01
0.3
1
%
Voltage conversion
recording bias current
VBIAS
No-
Signal
T3
Each head is typical impedance.
270
300
330 mVrms
Current dissipation
(PB)
ICCPA
No-
Signal
T18
7
9
11
mA
LINE AMP Voltage
gain (PB)
VGLP
SG5
1kHz
-28dBm
T9A
T11A
22.9
23.4
23.9
dB
LINE AMP Distortion
ratio (PB)
THDL
SG5
1kHz
-28dBm
T9A
T11A
0.01
0.1
0.3
%
LINE AMP Maximum
output voltage (PB)
VOML
SG5
1kHz
-23dBm
T9A
T11A Output voltage is over 0.8V, also output
distortion is under 1%
0.01
0.1
1
%
PB attenuation level
(-7dB)
PBAT7
SG5
1kHz
-28dBm
T9A
T11A
-6
-7
-8
dB
LINE AMP Output
noise voltage (PB)
VNOL
R = 1k
Ω
T9A
T11A Filter : DIN-AUDIO (= UNWEIGHTED)
100
200
300
μVrms
PB Input conversion
noise voltage
VNIE
R = 600
Ω
T5A
T11A Filter : DIN-AUDIO (= UNWEIGHTED)
0.1
1
2
μVrms
EQ AMP open loop
gain
VGSPB1
SG5
1kHz
-68dBm
T5A
T8A
58
64
70
dB
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