參數(shù)資料
型號(hào): MC44302ADW
廠商: MOTOROLA INC
元件分類(lèi): 消費(fèi)家電
英文描述: ADVANCED MULTI-STANDARD VIDEO/SOUND IF
中文描述: SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝: PLASTIC, SO-28
文件頁(yè)數(shù): 1/28頁(yè)
文件大?。?/td> 612K
代理商: MC44302ADW
Device
Tested Operating
Temperature Range
Package
SEMICONDUCTOR
TECHNICAL DATA
ADVANCED
MULTI–STANDARD
VIDEO/SOUND IF
ORDERING INFORMATION
MC44302ADW
MC44302AP
TA = 0
°
to +70
°
C
SO–28L
Plastic DIP
P SUFFIX
PLASTIC PACKAGE
CASE 710
28
1
(Top View)
PIN CONNECTIONS
Order this document by MC44302A/D
28
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751F
(SO–28L)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Intercarrier
Sound Output
Audio Output
(Variable)
Sound Quadrature
Coil (FM)
VCC
Audio Output
(Constant)
Sound Input (AM)
DC Volume Control
Sound Input (FM)
Audio Input/
Audio–Video Switch
Sound
De–Emphasis (FM)
Negative Video Out
Positive Video Out
Sound AFT Filter/
Peak White Filter
Video IF Input
Video IF Input
Video Mode Switch
AFT Output
AFT Mode Switch
RF AGC Output
Video IF AGC Filter
Gnd
VCO Coil
VCO Coil
PLL Filter
(Main VCO Loop)
Lock Detector/Filter
(Acquisition Circuit)
Flyback/Video Input
Horizontal PLL Filter
RF AGC Delay
1
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
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
Motorola, Inc. 1997
Rev 0
Simplified Television Block Diagram
DC Volume
Control
MC44302A
Vertical & Horizontal
Scan Circuitry
Power
Supply
VHF/UHF
Tuner
Video
IF
Audio
Amp
Video
Detector
Sound
IF
Sound
Detector
Video
Drivers
Luma & Chroma
Processor
SAW
Filter
Horizontal
Gating System
RF/IF
AGC
Mode
Switch
AFT
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