CXA3219M Просмотр технического описания (PDF) - Sony Semiconductor

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CXA3219M

UHF-Band RF Modulator for VCR

Sony Semiconductor 

Pin Description and Equivalent Circuit

Pin

No.

Symbol

1 GND1

Typical pin

voltage [V]

Equivalent circuit

2 P/S ADJ

1.8

2

740

11.4k

3 T1/T2 SW

2.4

4 REG OUT

4.1

53.8k

3

37.6k

75k

4

12.5k

CXA3219M

Description

GND for RF/audio.

P/S adjustment (Adding a

capacitor between Pin 2 and

GND increases P/S ratio.)

Video modulation depth

adjustment (Adding a resistor

between Pin 2 and GND

increases the modulation

depth; adding a resistor

between Pins 2 and 4

decreases the modulation

depth.)

T1/T2 SW.

T1 for GND.

T2 for OPEN.

Regulator output.

5 AUDIO IN

0

22.5k

6 TANK1

3.1

6

6.4k

1.6k

Audio input.

5

5.5MHz audio tank coil

connection.

–2–

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