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LA75676V-S Fiches technique(PDF) 9 Page - Sanyo Semicon Device

No de pièce LA75676V-S
Description  VIF/SIF IF Signal-Processing Circuit for TV and VCR Products
Download  13 Pages
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Fabricant  SANYO [Sanyo Semicon Device]
Site Internet  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA75676V-S Fiches technique(HTML) 9 Page - Sanyo Semicon Device

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No. 6277-9/13
LA75676V-S
Continued from preceding page.
Pin No.
Pin
Function
Equivalent circuit
Outputs a video signal that includes the SIF carrier. A
resistor must be inserted between pin 10 and ground
to acquire adequate drive capability.
R
≥ 560 Ω
10
Composit video output
10
2k
15pF
A13275
VCO tank circuit for video detection
See the separately provided coil specifications for
details on the tank circuit. This VCO is a vector
synthesis VCO circuit.
11
12
VCO tank
11
12
A13276
AFT output
This circuit includes a function that controls the AFT
voltage so that it naturally goes to the center voltage
during weak field reception.
A 120 k
Ω bleeder resistor is built in. Note that the
sensitivity can be lowered by attaching an external
resistor.
13
AFT output
13
120k
1k
120k
A13277
RF AGC output
This output controls the tuner RF AGC. The internal
circuit includes both a 30 k
Ω pull-up resistor and a
100
Ω protective resistor. Determine the value of the
external bleeder resistor to match the specifications of
the tuner.
14
RF AGC output
14
to tuner
A13278
Continued on next page.


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