Color TV Video Modulator
®
MOTOROLA
MC1372
COLOR TV VIDEO MODULATOR
... an mtegrated circuit used to generate an RF TV signal from
baseband co...
Description
®
MOTOROLA
MC1372
COLOR TV VIDEO MODULATOR
... an mtegrated circuit used to generate an RF TV signal from
baseband color-difference and luminance signals. The MC1372 contains a chroma subcamer oscillator, a lead and
COLOR TV VIDEO MODULATOR CIRCUIT
SILICON MONOLITHIC INTEGRATED CIRCUIT
lag network, a quasi-quadrature suppressed carrier DSB chroma modulator, an RF oscillator and modulator, and an LSTTL compatrble clock driver with adjustable duty cycle. The MC1372 is a companion part to the MC6847 Video Display
Generator, providmg and accepting the correct de interconnection levels. This device may also be used as a general-purpose modulator wtth a variety of vtdeo signal generating devices such as video games, test equipment, video tape recorders, etc.
.~ '~~ ~ ~ ~
Duty
P SUFFIX
PLASTIC PACKAGE CASE 646-05
Single 5.0 Vdc Supply Operation for NMOS and TTL Compatibility
Minimal External Components
Pin Connections
Compatible with MC6847 Video Display Generator Sound Carrier Addition Capability Modulates Channel 3 or 4 Carrier with Encoded Vrdeo Signal
Low Power Dissipation
Linear Chroma Modulators for High Versatrlity Composrte Vrdeo Signal Generation Capability Ground-Referenced Video Prevents Overmodulation
Chromtnance
input
Lum1nance
Input
ChrorT;a 1'0odu!ator
Output
FIGURE 1- BLOCK DIAGRAM
RF
Color 8 Input
Lum1flance
1npi..-t
Modulator
Output
Oscillator
Input
Chrorninance
1nput
e----, 41r--+-----t-D
Clock
Output
Modulator
Outpu"t...
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