AN3117 View Datasheet(PDF) - Panasonic Corporation

Part Name

Description

Manufacturer

AN3117

RF modulator IC for VCR and VDP

Panasonic Corporation 

AN3117S, AN3117SA

s Terminal Equivalent Circuits

Pin No. Pin name

Equivalent circuit

1 GND

1

Other ICs for Video

Description



Standard open voltage



2 P/S

Adjustment pin

2

2 kΩ

P/S ratio becomes large when

the capacitance connected be-

tween pin and GND increases.

2.7 V

3 RF OSC

Control pin

3

10 kΩ

Pin to control RF OSC.

Oscillation of RF becomes

unstable when capacitance

connected between pin and

GND is too small.

4 SIF

Oscillation pin 1

4

5 SIF

Oscillation pin 2

6 Sound input pin

6

20 kΩ

6.2 kΩ

5

Reference bias source of

oscillator. Sound buzz appears

to decrease in sense of hear-

ing when capacitance is con-

nected between pin and GND

to cut AC signal. Oscillation

frequency is determined by

the external tank circuit.

Reference oscillator for

4.5 MHz sound modulator.

Typical DC voltage is almost

same as GND potential. If

DC level of sound input sig-

nal is GND potential, an ex-

ternal coupling capacitor is

not necessary. The circuit

configuration which is de-

signed to minimize the volt-

age variation at power sup-

ply on makes less pop noise.

4.2 V

4.2 V

0V

4

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