LA75503V_01 View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LA75503V_01 Datasheet PDF : 15 Pages
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LA75503V
System Switching
• 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
GND
GND
GND
OPEN
OPEN
GND
O
OPEN
OPEN
O
Note: "O" indicates that the system is selected.
D/K
M/N
O
O
FM DET LEVEL
6 dB
0 dB
0 dB
0 dB
De-emphasis
75 µs
50 µs
50 µs
50 µs
• 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 kΩ 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
SIF INPUT 1
FM FILTER 2
NC 3
1st SIF OUT 4
NC 5
VIDEO DET OUT 6
EQ FILTER 7
SIF AGC FILTER 8
APC FILTER 9
FLL FILTER 10
VCO COIL 11
VCO COIL 12
SYSTEM SW [A] 13
SYSTEM SW [B] 14
REF OSC 15
LA75503V
30 FM DET OUT
29 FM NOISE FILTER
28 RF AGC VR
27 SIF PLL FILTER
26 NC
25 FILTER CONTROL CAPACITOR
24 VIF INPUT
23 VIF INPUT
22 GND
21 VCC
20 1st SIF INPUT
19 NC
18 IF AGC FILTER
17 RF AGC OUT
16 AFT OUT
Top view
No. 6804-4/15
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