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
1
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
