4fsc Clock Generator
MITSUMI
4fsc Clock Generator MM1093
4fsc Clock Generator
Monolithic IC MM1093
Outline
This IC generates a clock used ...
Description
MITSUMI
4fsc Clock Generator MM1093
4fsc Clock Generator
Monolithic IC 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 Chroma input Equivalent Circuit Diagram Pin Description Chroma signal input pin
2
ACC filter
ACC filter pin
3
APC1 filter
fsc APC circuit filter pin
4
X'tal
VCXO circuit X'tal pin
5 6 7
GND1 GND2 fsc output
fsc GND pin 4fsc GND pin Outputs subcarrier synchronized to input chroma signal NTSC : 3.579545MHz PAL : 4.433619MHz
MITSUMI
4fsc Clock Generator MM1093
8 9
NC Oscillator R
NC pin Connects to resistor that determines 4fsc VCO free run frequency
10 11 12
VCC1 VCC2 Oscillator C
fsc power supply pin 4fsc power supply in Connects to capacitor that determines 4fsc VCO free run frequency
13
APC2 filter
4fsc AP...
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