MC44144 Datasheet, PDF (1/8 Pages) Motorola, Inc – SUBCARRIER PHASE–LOCKED LOOP

Subcarrier Phase-Locked Loop
The MC44144 is a gated phase–locked loop intended for, but not
restricted to, video applications. The integrated circuit contains a gated
phase detector, voltage controlled crystal oscillator, divide–by–4 circuitry,
and a video clamp. This device provides a 4X reference frequency output,
and a 1X reference frequency output.
The MC44144 is manufactured using Motorola’s high density, bipolar
MOSAIC™ process.
• 8–Pin DIP or Surface Mount Package
• Gated–Phase Detector
• Single Pin Voltage Controlled Crystal Oscillator
• 1X and 4X Subcarrier Output
• Operates Off of a Standard 5.0 V Supply
Order this document by MC44144/D
MC44144
SUBCARRIER
PHASE–LOCKED LOOP
SEMICONDUCTOR
TECHNICAL DATA
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
+ 5.0
8
Voltage
Reference
2.6V
Representative Block Diagram
Composite
Video
Burst
Gate
75
0.1µ
7
6
4X
Subcarrier
Output
1.0n
5
Clamp Out
Gate Pulse
Video Clamp
Video In
Clamp In
Reference
Subcarrier
Phase
Detector
Phase Det Out
Subcarrier
Reference
Output
Divide by 4
1
2
1.0n
Subcarrier
Output
Voltage
Control
Input
4X Ref
Drive
4X Ref
Out
VCO
Crystal
3
47k
470p
0.1µ
4
14.32/
17.73MHz
5.0 to 25p
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
1
Subcarrier
Output
VCC 8
2 Gnd
Burst
Gate
7
Phase
3 Detector
Output
4
4X Sub
Xtal
Comp
Video 6
Input
4X
Subcarrier 5
Output
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC44144D
MC44144P
TA = 0° to +70°C
SO–8
Plastic
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 2
1