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參數資料
| 型號： | LA7383 |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP36 |
| 封裝： | SDIP-36 |
| 文件頁數： | 9/13頁 |
| 文件大小： | 184K |
| 代理商： | LA7383 |
Continued from preceding page.
Parameter
Symbol
Conditions
min
typ
max
Unit
Playback through gain
GPB
Apply VIN = 0.5 Vp-p video signal to pin 3, and
determine ratio between pin 28 output level and
input level
4.5
6.0
7.5
dB
Dropout detection (feedback)
level
LDOC
T33A: 4 MHz, 300 mVp-p sine wave
T3A: 0.5 Vp-p video signal
Measure input signal level when T33A signal
drops momentarily and T28A output goes to 0
30
40
50
mVp-p
Nonlinear de-emphasis
characteristics (1)
GNLDEEM1
NIN = white 50% video + sine wave
f = 2 MHz, 158 mVp-p
Measure I/O response, and assign output level
described above as 0 dB
–6.0
–5.0
–4.0
dB
Nonlinear de-emphasis
characteristics (2)
GNLDEEM2
f = 2 MHz, 50 mVp-p
–9.0
–8.0
–7.0
dB
Double noise canceller
characteristics (1)
GWNC1
f = 2 MHz, 158 mVp-p
–2.3
–1.8
–1.3
dB
Double noise canceller
characteristics (2)
GWNC2
f = 2 MHz, 50 mVp-p
–6.0
–5.0
–4.0
dB
Double noise canceller
characteristics (3)
GWNC3
f = 2 MHz, 15.8 mVp-p
–10.5
–9.0
–7.5
dB
Double noise canceller
characteristics (4)
GWNC4
f = 3.58 MHz, 158 mVp-p
–2.0
–1.5
–1.0
dB
Double noise canceller
characteristics (5)
GWNC5
f = 3.58 MHz, 50 mVp-p
–5.1
–4.1
–3.1
dB
Double noise canceller
characteristics (6)
GWNC6
f = 3.58 MHz, 15.8 mVp-p
–10.5
–8.5
–7.0
dB
PIC-CTL hard response
characteristics (1)
GPH1
f = 1 MHz, 158 mVp-p
3.5
4.5
5.5
dB
PIC-CTL hard response
characteristics (2)
GPH2
f = 2 MHz, 158 mVp-p
7
8
9
dB
PIC-CTL soft response
characteristics (1)
GPS1
f = 1 MHz, 158 mVp-p
–5.5
–4.5
–3.5
dB
PIC-CTL soft response
characteristics (2)
GPS2
f = 2 MHz, 158 mVp-p
–9
–8
–7
dB
PIC-CTL center response
characteristics
GPC
f = 2 MHz, 158 mVp-p
1.0
1.5
2.0
dB
DOC loop gain Y
GDOC
T33A: 4 MHz, 300 mVp-p sine wave
T3A: 0.5 Vp-p video signal
I/O response 5H after instant when input at T33A
went to 0
–1.0
0
+1.0
dB
Sync tip level,
pedestal level,
white level measurement (PB)
LVOR
With VIN = white 100% 0.5 Vp-p
Measure electric potential for each of the pin 28
video output sync tip, pedestal, and white peak,
and assign the measured values to LSYN,LPED,
and LWHI, respectively
—
Pseudo V insertion level (PB)
VDP
Measure pin 28 DC voltage when5Vis applied
to pin 26, and assign the measured value to
LVDP, and calculate the difference with LSYN
VDP =LSYN –LVDP
–80
0
+80
mV
Pseudo H insertion level (PB)
HDP
Measure pin 28 DC voltage when 2.5 V is applied
to pin 26, and assign the measured value to
LHDP, and calculate the difference with LPED
HDP =LPED –LHDP
–200
–100
0
mV
White insertion level (PB)
WHP
Measure pin 28 DC voltage when 1.3 V is applied
to pin 26, and assign the measured value to
LWHP, and calculate the difference with LWHI
WHP =LWHI –LWHP
40
140
240
mV
Sync separation output level
VSYP
VIN = 0.5 Vp-p video signal
Pin 26 output pulse peak value
4.0
4.2
4.4
Vp-p
Continued on next page.
LA7383
No.4032-5/13
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