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PC1353

DESCRIPTION

LINEAR INTEGRATED CIRCUIT

TV AUDIO PROCESSING CIRCUIT

Contek PC1353 is designed for TV SIF signal amplification

and audio power amplification purpose. It includes SIF

amplifier, FM, frequency discriminator, DC volume control,

2.4W power amplifier and voltage regulator.

FEATURES

* Wide operating supply voltage,9V ~ 18V

When VCC=18V,RL=8

When VCC=12V,RL=8

* Linear volume control

* Low harmonic distortion

* Differential peak detector

* Attenuation circuit for noise suppression(Typical80dB)

W,Output

is 2.4W(17"TV)

W,Output

is 1.2W(12"TV)

DIP-14H

APPLICATION CIRCUIT

RB

Vcc

220

mF

Deweighting

IF discreminator

output

4.7

mF

0.015

mF

IF power

input

22kW

Contek

14

0.1

mF

3

4

7

5

Volume

VR

control

5kW

270W

attenuator

IF voltage

regulation

0.01

mF

100

mF

Power for

audio output

10

12

Input

coil

0.022

mF

IF amplifier

limiter

Bootstrap

100

mF

Mute

13

Frequency

discreminator

9

Power AMP

output

8

330

mF

22W

470pF

47

mF

TAB

FM

discreminator

coil

1

2

100

mF

10pF

6

11

Negative

Feedback

Decoupling

Fig 1

Contek Microelectronics Co.,Ltd.

CONTEK

http://www.contek-ic.com E-mail:sales@contek-ic.com

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