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MITSUMI |
MITSUMI
4fsc Clock Generator
Monolithic IC MM1093
4fsc Clock Generator MM1093
Outline
This IC generates a clock used for driving the CCD that configures a comb filter for Y/C separation, or for
sampling A/D and D/A converters that configure a digital comb filter.
It has a built-in subcarrier oscillator (3.58MHz or 4.43MHz) synchronized to the input chroma signal, and a
clock oscillator that is 4 times the latter. MM1093ND and NF are available for NTSC format, and MM1093PD
and PF for PAL format.
Features
1. Built-in fsc synchronized to input chroma signal and 4fsc oscillators
2. Reduced number of external parts due to 1 pin VCXO
3. +5V single power supply
Package
SOP-16A (MM1093NF, MM1093PF)
DIP-16B (MM1093ND, MM1093PD)
Applications
1. TV
2. VCR
Equivalent Circuit Diagram
MITSUMI
4fsc Clock Generator MM1093
Pin Description
Pin no.
1
Pin name Equivalent Circuit Diagram
Chroma input
Pin Description
Chroma signal input pin
2 ACC filter
ACC filter pin
3 APC1 filter
4 X'tal
5 GND1
6 GND2
7 fsc output
fsc APC circuit filter pin
VCXO circuit X'tal pin
fsc GND pin
4fsc GND pin
Outputs subcarrier synchronized to input
chroma signal
NTSC : 3.579545MHz
PAL : 4.433619MHz
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