PRODUCT DESCRIPTION

The AD722 is a low cost RGB to NTSC/PAL Encoder that converts red, green and blue color component signals into their corresponding luminance (baseband amplitude) and chromi nance (subcarrier amplitude and phase) signals in accordance with either NTSC or PAL standards. These two outputs are also combined to provide composite video output. All three outputs can simultaneously drive 75 Ω, reverse-terminated cables. All logical inputs are CMOS compatible. The chip operates from a single +5 V supply. No external delay lines or filters are required. The AD722 may be powered down when not in use.

FEATURES

Low Cost, Integrated Solution

+5 V Operation

Accepts FSC Clock or Crystal, or 4FSC Clock

Composite Video and Separate Y/C (S-Video) Outputs

Minimal External Components:

  No External Filters or Delay Lines Required

  Onboard DC Restoration

  Accepts Either HSYNC & VSYNC or CSYNC

Phase Lock to External Subcarrier

Drives 75 Ω Reverse-Terminated Loads

Logic Selectable NTSC or PAL Encoding Modes

Compact 16-Pin SOIC

APPLICATIONS

RGB to NTSC or PAL Encoding