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LA75503V датащи(PDF) 4 Page - Sanyo Semicon Device

номер детали LA75503V
подробное описание детали  Adjustment Free VIF/SIF Signal Processing IC for PAL TV/VCR
Download  15 Pages
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производитель  SANYO [Sanyo Semicon Device]
домашняя страница  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA75503V датащи(HTML) 4 Page - Sanyo Semicon Device

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System Switching
No. 6804-4/15
LA75503V
• SIF system switch
The SIF system is switched by setting pins A (pin 13) and B (pin 14) to GND or OPEN.
A
B
B/G
I
D/K
M/N
FM DET LEVEL
De-emphasis
GND
GND
O
6 dB
75 µs
GND
OPEN
O
0 dB
50 µs
OPEN
GND
O
0 dB
50 µs
OPEN
OPEN
O
0 dB
50 µs
Note: "O" indicates that the system is selected.
• IF system switch
38.9 MHz is selected as the IF frequency by leaving pin 15 (crystal oscillation) open. 38 MHz is selected by adding
220 k
Ω between pin 15 and GND. This device can also select 39.5 MHz operation by adding a 220 kΩ resistor between
pin 15 and VCC.
• Split/inter carrier switch
Inter carrier is selected by setting the first SIF input (pin 20) to GND.
Sound Trap
The trapping point of the sound trap is set approximately 250 kHz above the SIF center frequency of each mode to
improve the video S/N. Therefore, design using split specifications is preferable.
Pin Assignment
25
2
1
SIF INPUT
FM FILTER
NC
1st SIF OUT
NC
VIDEO DET OUT
EQ FILTER
SIF AGC FILTER
APC FILTER
FLL FILTER
VCO COIL
VCO COIL
SYSTEM SW [A]
SYSTEM SW [B]
REF OSC
FM DET OUT
FM NOISE FILTER
RF AGC VR
SIF PLL FILTER
NC
FILTER CONTROL CAPACITOR
VIF INPUT
VIF INPUT
GND
VCC
1st SIF INPUT
NC
IF AGC FILTER
RF AGC OUT
AFT OUT
3
4
5
6
7
8
9
22
23
24
26
27
28
29
30
LA75503V
10
11
12
19
20
21
13
14
15
16
17
18
Top view


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