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MM1268

MITSUMI
Part Number MM1268
Manufacturer MITSUMI
Description RGB Encoder
Published May 7, 2005
Detailed Description MITSUMI RGB Encoder MM1268 RGB Encoder Monolithic IC MM1268 Outline This IC converts analog RGB signals into chroma, ...
Datasheet PDF File MM1268 PDF File

MM1268
MM1268

Overview
MITSUMI RGB Encoder MM1268 RGB Encoder Monolithic IC MM1268 Outline This IC converts analog RGB signals into chroma, Y+S and composite video signals.
Features 1.
Operates on 5V single power supply 2.
Supports NTSC and PAL formats 3.
Supports S (Y, C output) 4.
75Ω driver output (RGB output, Y, C output, composite video output) 5.
Built-in BRF and delay circuits Package SOP-24A Applications 1.
PCs 2.
Game equipment 3.
Other video equipment Equivalent Circuit Diagram MITSUMI RGB Encoder MM1268 Pin Description Pin no.
1 2 3 4 Pin name GND1 RIN GIN BIN RGB input pins Maximum input voltage is 1VP-P DC level is 2V during clamp Function Internal equivalent circuit diagram 5 6 NC SCIN OPEN Subcarrier input pin Input a 0.
4V~5VP-P sine wave 7 NTSC/PAL Mode setting pin NTSC : VCC PAL : GND 8 BFPOUT Burst flag pulse monitor pin MITSUMI RGB Encoder MM1268 9 Yclp Connects to capacitor for Y signal clamp 10 SYNCIN Composite sync signal input pin 11 12 13 NC VCC1 Iref OPEN Determines internal reference current Connect a 47kΩ resistor between this pin and ground 14 Vref Internal reference voltage pin Reference voltage is 4V Connect a 10µF capacitor between this pin and ground.
MITSUMI RGB Encoder MM1268 15 16 COUT YOUT Chroma signal output pin Luminance signal output pin Able to drive 75Ω load 17 Ytrp Connects to trap for removing subcarrier frequency component in VIDEO output luminance signal 18 f0 Determines filter and delay circuit f0 NTSC : 20k PAL : 16k 19 20 VCC2 VIDEO OUT Output stage power supply Composite video signal output pin Able to drive 75Ω load MITSUMI RGB Encoder MM1268 21 22 23 BOUT GOUT ROUT RGB signal output pin Able to drive 75Ω load 24 GND2 Output stage GND Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage Allowable loss (Ta=25°C) Symbol TSTG TOPR VCC max.
Pd Ratings -40~+125 -20~+75 +7 720 75.
0 Units °C °C V mW 0.
8mm garaepo board) *1 Note : 1 Loss tolerance w...


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