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PDF MC44144 Data sheet ( Hoja de datos )
| Número de pieza | MC44144 | |
| Descripción | SUBCARRIER PHASE-LOCKED LOOP | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MC44144 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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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
76
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
1.0n
Subcarrier
Output
2
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
Input
6
4X
Subcarrier
Output
5
(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
1 page  
MC44144
Linear and TTL Output Buffers
The output buffers of the MC44144 are not designed to
any specific logic family. If it is desired, Linear or TTL buffers
can be added externally. Figure 3 shows an example of a
Linear buffer using an MC3346 Transistor array; virtually any
utility transistor can be used. Figure 4 shows a TTL type
buffer using an MC74LS04 buffer.
Figure 3. Linear Buffer
1
2
4X Subcarrier
Output or 1X
Subcarrier
Output
+5.0V
Cin
1000µF
R1
3.3k
R2
1.8k
3
4
5
6
7
R5
56
MC3346
14
13
12 +5.0V
11
10
R4
430
9 Co
1000µF
8 Linear Output
C2
100pF
R3
300
4X Subcarrier
Output or 1X
Subcarrier
Output
C1
0.01µF
R2
10k
Figure 4. TTL Buffer
R3
1.0k
MC74LS04
13
11
9
5
3
1
12
10
8 TTL Output
C2
47pF
6
4
2
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MC44144.PDF ] | |
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