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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 V Reverse-Terminated Loads
Low Power +5 V Operation
Power-Down to <1 mA
Very Low Cost
RGB/VGA to NTSC/PAL Encoding
Personal Computers/Network Computers
Video Conference Cameras
Digital Still Cameras
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.
The AD725 features a luminance trap (YTRAP)
pin that provides a means of reducing cross color generated
by subcarrier frequency components found in the luminance signal.
For portable or other power-sensitive applications,
the device can be powered down to less than 1 µA of current consumption.
in a low cost 16-lead SOIC and operates from a +5 V supply.