MM1268

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 ...