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參數資料
| 型號： | LA71205M |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | 14 X 14 MM, QFP-80 |
| 文件頁數： | 16/19頁 |
| 文件大小： | 436K |
| 代理商： | LA71205M |
LA71205M
No.A0219-6/29
Continued from preceding page.
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
Double
noisecanceller
characteristics (1)
GWNC1
T22A
T26
f = 1.4MHz, 158mVp-p
-2.0
-1.0
0.0
dB
Double
noisecanceller
characteristics (2)
GWNC2
T22A
T26
f = 1.4MHz, 50mVp-p
-7.0
-5.0
-3.0
dB
Double
noisecanceller
characteristics (3)
GWNC3
T22A
T26
f = 1.4MHz, 15.8mVp-p
-15
-13
-11
dB
Sync separator
output level
VSYP
T22A
T25
With VIN a 0.5Vp-p video signal, measure the output pulse
wave height on T34.
4.0
4.2
4.4
Vp-p
Sync separator
output pulse width
PWSYP
T22A
T25
With VIN a 0.5Vp-p video signal, measure the output pulse
width on T34.
4.1
4.4
4.7
s
Sync tip level
Pedestal level
White level
LVOR
T22A
T26
With VIN a 100% white 0.5Vp-p signal, measure the sync tip
and pedestal and white levels on T26 video output, and take
these as LSYN LPED LWHT, respectively
Quasi-V insertion
level
VDP
T22A
T26
Measure the T26 DC voltage with 4.0V applied to T24,and take
this to be LVDP, and compute the difference with LSYN
measured above.
VDP = LSYN-LVDP
-100
0
100
mV
4V regulator
VREG
T31
Measure the T31 DC level.
3.9
4.0
4.3
V
Notes on PB-Y Measurement
When inputting a sine wave signal to pin 14, pull up the pin 14 DC level to 3.4 V.
When inputting a video signal to pin 22, also input a 4 MHz 300mVp-p sine wave to pin 14 so that the DOC function does not operate.
PB Mode EQ
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
PB EQ
characteristics 1
*Serial-control
GPEQ1
T14A
T17
With VIN a CW 4MHz + 3.4VDC 300mVp-p signal, measure
the input/output response.
1.5
3.0
4.5
dB
PB EQ
2’nd distortion
HPEQ
T14A
T17
Measure the second harmonic in the above condition.
-40
-30
dB
PB EQ
characteristics 2
GPEQ2
T14A
T17
With VIN a CW 750MHz 300mVp-p signal, measure the
input/output response
-30
Vp-p
PB EQ Trap
characteristics
fPEQ
T14A
T17
High-band Trap frequency and measurement of Gain.
(Using network analyzer)
-25
dB
PB Mode S Discrimination
Ratings
Parameter
Symbol
In
Out
Conditions
min
typ
max
Unit
Output voltage
when normal VHS
VNDETN
T14
T19
VIN = 300mVp-p f: 4MHz +3.4VDC
0
0.2
0.5
V
Output voltage
when S-VHS
VSDETS
T14
T19
VIN = 300mVp-p f: 6MHz +3.4VDC
4.4
4.7
5.0
V
S-discrimination
input level
VSDET
T14
T19
Input level which doesn’t make a miss discrimination when
changing T14 input level.
50
mVp-p
Normal-discrimination
input level
VNDET
T14
T19
Input level which doesn’t make a miss discrimination when
changing T14 input level.
50
mVp-p
Normal
→
S-discrimination
threshold level
FSDETNS
T14
T19
The frequency T19 become H when input to T14 sine wave,
and increasing from f = 4MHz.
4.5
5.0
5.5
MHz
S
→ normal
discrimination
threshold level
FSDETSN
T14
T19
The frequency T19 become L when input to T14 sine wave,
and decreasing from f = 5MHz.
4.2
4.7
5.2
MHz
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