MITSMI MM1093PD, MM1093PF, MM1093ND, MM1093NF Datasheet

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. Pin name Equivalent Circuit Diagram Pin Description

1 Chroma input

2 ACC filter

3 APC1 filter

Chroma signal input pin

ACC filter pin

fsc APC circuit filter pin

4 X'tal

5 GND1

6 GND2

7 fsc output

VCXO circuit X'tal pin

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 NC

9 Oscillator R

10 V

11 V

CC1

CC2

12 Oscillator C

NC pin

Connects to resistor that determines 4fsc VCO
free run frequency

fsc power supply pin

4fsc power supply in
Connects to capacitor that determines 4fsc
VCO free run frequency

13 APC2 filter

14 4fsc output

4fsc APC circuit filter pin

Outputs a 4 signal sychronized to input
chroma signal.