UTCPC1353

LINEAR INTEGRATED CIRCUIT

QW-R111-002,A

TV AUDIO PROCESSING CIRCUIT

DESCRIPTION

UTC 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

Ω,Output is 2.4W(17"TV)

When VCC=12V,RL=8

Ω,Output is 1.2W(12"TV)

* Linear volume control

* Low harmonic distortion

* Differential peak detector

* Attenuation circuit for noise suppression(Typical80dB)

DIP-14H

APPLICATION CIRCUIT

6

11

8

9

10

5

7

4

3

14

12

13

1

2

attenuator

IF voltage

regulation

IF amplifier

limiter

Mute

Frequency

discreminator

Power AMP

output

TAB

RB

220

µF

4.7

µF

0.015

µF

IF discreminator

output

IF power

input

Deweighting

Vcc

100

µF

330

µF

47

µF

470pF

22

Ω

10pF

22k

Ω

VR

5k

Ω

270

Ω

Volume

control

Input

coil

FM

discreminator

coil

Decoupling

Bootstrap

Power for

audio output

Negative

Feedback

Fig 1