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AD722 - RGB to NTSC/PAL Encoder

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 chrominance (subcarrier amplitude and phase) signals in accordance with either NTSC or PAL standards.

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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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a 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 RGB to NTSC/PAL Encoder AD722 The AD722 accepts either FSC or 4FSC clock. When a clock is not available, a low cost parallel-resonant crystal (3.58 MHz (NTSC) or 4.43 MHz (PAL)) and the AD722’s on-chip oscillator generate the necessary subcarrier clock. The AD722 also accepts the subcarrier clock from an external video source.
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