MC44302A Datasheet, PDF (1/28 Pages) Motorola, Inc – ADVANCED MULTI–STANDARD VIDEO/SOUND IF

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MC44302A
Advanced Information
Advanced Multi-Standard TV
Video/Sound IF
The MC44302A is a multi–standard single channel TV Video/Sound IF
and PLL detector system specifically designed for use with all standard
modulation techniques including NTSC, PAL, and SECAM. This device
enables the designer to produce a high quality IF system with a minimum
number of external components.
The MC44302A contains a high gain video IF with an AGC range of 80 dB,
enhanced phase–locked loop carrier regenerator for low static phase error,
doubly balanced full wave synchronous video demodulator featuring wide
bandwidth positive and negative video outputs with extremely low differential
gain and phase distortion, video AFT amplifier, multistage sound IF limiter
with FM quadrature detector and AFT for self tuning, AM sound detector,
constant and variable audio outputs, dc volume control for reduced hum and
noise pickup, unique signal acquisition circuit that prevents false PLL lockup
and AFT push out, horizontal gating system with sync separator and
phase–locked loop circuitry for self–contained RF/IF AGC operation, RF
AGC delay circuitry, and programmable control logic that allows operation in
NTSC, and PAL SECAM systems. This device is available in wide body 28 pin
dual–in–line and surface mount plastic packages.
• Multi–Standard Detector System for NTSC, PAL, and SECAM
• High Gain Video IF Amplifier with 80 dB AGC Range
• Enhanced PLL Carrier Regenerator for Low Static Phase Error
• Synchronous Video Demodulator with Positive and Negative Video
Outputs
• Sound IF with Self Tuning FM Quadrature Detector
• AM Sound Detector
• DC Volume Control
• Unique Signal Acquisition Circuit Prevents False PLL Lockup
• Horizontal Gating System for Self Contained RF/IF AGC Operation
• RF AGC Delay Circuitry
Simplified Television Block Diagram
VHF/UHF
Tuner
SAW
Filter
Luma & Chroma
Processor
Video
Drivers
Vertical & Horizontal
Scan Circuitry
ADVANCED
MULTI–STANDARD
VIDEO/SOUND IF
SEMICONDUCTOR
TECHNICAL DATA
28
1
28
1
P SUFFIX
PLASTIC PACKAGE
CASE 710
DW SUFFIX
PLASTIC PACKAGE
CASE 751F
(SO–28L)
PIN CONNECTIONS
DC Volume Control 1
Sound Input (FM) 2
Audio Input/
Audio–Video Switch
3
Sound ₄
De–Emphasis (FM)
Negative Video Out 5
Positive Video Out 6
Sound AFT Filter/ ₇
Peak White Filter
Video IF Input 8
Video IF Input 9
Video Mode Switch 10
AFT Output 11
AFT Mode Switch 12
RF AGC Output 13
Video IF AGC Filter 14
28
Intercarrier
Sound Output
27
Audio Output
(Variable)
26 ^{Sound Quadrature}
Coil (FM)
25 VCC
24
Audio Output
(Constant)
23 Sound Input (AM)
22 Gnd
21 VCO Coil
20 VCO Coil
19
PLL Filter
(Main VCO Loop)
18 ^{Lock Detector/Filter}
(Acquisition Circuit)
17 Flyback/Video Input
16 Horizontal PLL Filter
15 RF AGC Delay
Video
IF
Video
Detector
Sound
IF
Sound
Detector
(Top View)
RF/IF
AGC
MC44302A
AFT
Horizontal
Gating System
DC Volume
Control
Mode
Switch
Audio
Amp
Power
Supply
ORDERING INFORMATION
Device
Tested Operating
Temperature Range Package
MC44302ADW
TA = 0° to +70°C
MC44302AP
SO–28L
Plastic DIP
This document contains information on a new product. Specifications and information herein
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© Motorola, Inc. 1997
Rev 0
1