Analog Devices AD725
Low Cost RGB to NTSC/PAL Encoder with Luma Trap Port
FEATURES
Composite Video Output: Both NTSC and PAL Chrominance and Luminance (S-Video) Outputs Luma Trap Port to Eliminate Cross Color Artifacts TTL Logic Levels Integrated Delay Line and Auto-Tuned Filters Drives 75 ⍀ Reverse-Terminated Loads Low Power +5 V Operation Power-Down to <1● A Very Low Cost
APPLICATIONS
RGB/VGA to NTSC/PAL Encoding Personal Computers/Network Computers Video Games Video Conference Cameras Digital Still Cameras Low Cost RGB to NTSC/PAL Encoder with Luma Trap Port AD725 PRODUCTDESCRIPTION
The AD725 is a very low cost general purpose RGB to NTSC/ PAL encoder that converts red, green and blue color component signals into their corresponding luminance (baseband amplitude) and chrominance (subcarrier amplitude and phase) signals in accordance with either NTSC or PAL standards. These two outputs are also combined on-chip to provide a composite video output. All three outputs are available separately at voltages of twice the standard signal levels as required for driving 75 Ω, reverse-terminated cables.