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參數(shù)資料
| 型號： | LA71521M |
| 文件頁數(shù)： | 4/25頁 |
| 文件大小： | 520K |
| 代理商： | LA71521M |
LA71521M
No. 5842-4/25
Continued on next page
Continued from preceding page
V
IN
= 300 mVp-p f = 4 MHz
Ratio of T25 4 MHz component and SDEM
Ratio of 3 fH component and
32.5 fH component with
V
IN
= white 50% + CW
(15.8 mVp-p)
Input/output response measured with
V
IN
= white 50% video + sine wave f = 2 MHz 158 mVp-p
00 OFF
10 (weak)
01 (medium)
11 (strong)
T38 video output sync tip (L
SYN
), pedestal (L
PED
), white
level (L
WHT
) potential measured with V
IN
= white 100%
0.5 Vp-p
DC voltage at T38 is measured when 5V is applied to
T33. Taking this as L
VDP
, differential with L
SYN
above
is calculated.
DC voltage at T38 is measured when 2.7V is applied to
T33. Taking this as L
HDP
, differential with L
PED
above is
calculated.
DC voltage at T38 is measured when 1.3V is applied to
T33. Taking this as L
WHP
, differential with L
WHT
above is
calculated.
Pin 37 output pulse crest value measured with
V
IN
= 0.5 Vp-p video signal
Pin 37 output pulse width measured with
V
IN
= 0.5 Vp-p video signal
Delay of output SYNC vs. input SYNC measured with
V
IN
= 0.5 Vp-p video signal
T31 DC level measured
Pin 17 signal amplitude measured with
V
IN
= 150, 300, 600 mVp-p 4 MHz CW
L
DEM
CL
G
NLDE
1
P
YNR
G
WNC
1
G
WNC
4
G
WNC
3
G
WNC
2
G
WNC
5
G
PH
1
G
PH
2
G
PH
3
L
VOR
VDP
HDP
WHP
P
WSYP
T
SYP
G
PH
4
VF
AGC
V
SYP
G
NLDE
2
Serial
V
REG
L
DEM
=
V
DEM4
– (V
DEM2
+V
DEM6
) /2
V
DEM6
–V
DEM2
x 100
min
typ
max
FM demodulator linearity
T15
T25
–3.5
0
%
Carrier leak
T15
T25
–35
dB
Playback YNR characteristics
T26A
T38
0
0
0
–3.7
–3.2
–2.7
–9.2
–8.2
–7.2
–13.3
–11.8
–10.3
Nonlinear
T26A
T38
–3.5
–2.5
–1.5
dB
deemphasis characteristics 1
Nonlinear
T26A
T38
f = 2 MHz, 50 mVp-p
4.5
6.0
7.5
deemphasis characteristics 2
2
2.5
4.0
5.5
3
0.5
2.0
3.5
4
0
0
0
Double noise
T26A
T38
f = 1.2 MHz, 158 mVp-p, pin 69 open
–3
–2
–1
dB
canceler characteristics 1
Gr2 bit 8/7 = "10", Gr5 bit 1 = "0"
Double noise
T26A
T38
f = 1.2 MHz, 50 mVp-p, pin 69 open
–7.5
–6.0
–4.5
dB
canceler characteristics 2
Gr2 bit 8/7 = "10", Gr5 bit 1 = "0"
Double noise
T26A
T38
f = 1.2 MHz, 15.8 mVp-p, pin 69 open
–14
–12
–10
dB
canceler characteristics 3
Gr2 bit 8/7 = "10", Gr5 bit 1 = "0"
Double noise
T26A
T38
f = 2.5 MHz, 15.8 mVp-p, pin 69 open
–6
–5
–4
dB
canceler characteristics 4
Gr2 bit 8/7 = "10", Gr5 bit 1 = "0"
Double noise
T26A
T38
f = 2.5 MHz, 15.8 mVp-p, pin 69 open
–9.5
–8.0
–6.5
dB
canceler characteristics 5
Gr2 bit 8/7 = "10", Gr5 bit 1 = "0"
PIC-CTL hard response
T26A
T38
f = 1 MHz, 158 mVp-p, Gr5 bit 6/5/4 = "1/0/0"
2.5
3.5
4.5
dB
characteristics 1
PIC-CTL hard response
T26A
T38
f = 2 MHz, 158 mVp-p, Gr5 bit 6/5/4 = "1/0/0"
6
7
8
dB
characteristics 2
PIC-CTL soft response
T26A
T38
f = 1 MHz, 158 mVp-p, Gr5 bit 6/5/4 = "0/0/0"
–4.5
–3.5
–2.5
dB
characteristics 1
PIC-CTL soft response
T26A
T38
f = 2 MHz, 158 mVp-p, Gr5 bit 6/5/4 = "0/0/0"
–8
–7
–6
dB
characteristics 2
Sync tip level
T26A
T38
700
800
900
mV
Pedestal level
White level measurement
Simulated V insertion level
T26A
T38
–50
0
mV
Simulated H insertion level
T26A
T38
–100
0
mV
White insertion level
T26A
T38
–100
0
mV
Sync separation output level
T26A
T37
4.0
4.2
4.4
Vp-p
Sync separation output pulse
T26A
T37
4.35
4.65
4.95
μ
s
width
Sync separation output
T26A
T37
0.7
0.9
1.10
μ
s
Pre-delay time
4V regulator
T31
3.8
4.0
4.2
V
FMAGC output level
T15
T17
325
350
375 mVp-p
dB
dB
+50
+3.5
+100
+100
CTL 1
Parameter
Symbol
Input
Output
Conditions
Ratings
Unit
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