MC44145 Datasheet, PDF (1/8 Pages) Motorola, Inc – PIXEL CLOCK GENERATOR / SYNC SEPARATOR

Order this document by MC44145/D
MC44145
Pixel Clock Generator/
Sync Separator
The MC44145, Pixel Clock Generator, is a component of the MC44000
family.
The MC44145 contains a sync separator with composite sync and vertical
outputs, and clock generation circuitry for the digitization of any video signal
along with the necessary circuitry for clock generation, such as a phase
comparator and a divide–by–2 to provide a 50% duty cycle.
The MC44145 is available in a SO–14 package and is fabricated in the
Motorola high density, high speed, low voltage, process called MOSAIC 1.5^®.
PIXEL CLOCK GENERATOR/
SYNC SEPARATOR
SEMICONDUCTOR
TECHNICAL DATA
MOSAIC is a trademark of Motorola, Inc.
14
1
Representative Block Diagram
Fref Video In
9 12
VCC
Sync Sep
11
Sync Out
Sync Amp
Div 2
BC
In
Out EN
35
4
10
8
A
A
Sync
Separator
Phase and
Frequency
Comparator
Up
Charge
Pump
VC
VCO
Dn
B2
FO 2FO
6
13 1
14
VCC NBACK NPD
Gain
R
C
MC44145
PLL Loop
Filter
C2
7
2
Clock Out Gnd
External
Divider
This device contains 214 active transistors.
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
PIN CONNECTIONS
NPD Gain 1
Gnd 2
Sync B 3
Sync Amp In 4
Sync C 5
VCC 6
Clock Out 7
14 PLL Loop Filter
13 NBACK
12 Video In
11 VCC2
10 Sync Amp Out
9 Fref
8 Div 2 EN
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC44145D TA = 0° to +70°C
SO–14
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1