LA75503V View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LA75503V

For PAL TV/VCR Adjustment Free VIF/SIF Signal Processing IC

SANYO -> Panasonic 

LA75503V

Continued from preceding page.

Pin No.

Pin name

Pin function

11

VCO COIL

This is the VCO tank circuit for the PLL detector.

12

Use a tuning capacitance of 24pF.

Use L and C specifications that are accurate to

±2%. Also, design the L and C values so that the

voltage of pin 10 is 3.6V when PLL is locked while

using the IF center frequency.

Equivalent circuit

13

SYSTEM SW [A] This is the system switch pin.

14

SYSTEM SW [B] The transistor turns ON when the pin voltage from

the circuit becomes approx. 1.4V.

15

REF OSC

This pin can be used both as the crystal resonator

pin and IF switch.

The 38MHz mode is selected by inserting 220kΩ

between pin 15 and GND, the 38.9MHz mode by

leaving the pin open, and the 39.5MHz mode by

inserting 220kΩ between pin 15 and VCC.

4MHz input is possible from this pin.

In the case of 4MHz external input, input 86dBµ

Continued on next page.

No.6804-9/15

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