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HDMI to HD-SDI conversion

Hi !

I am in need of circuit and latest DAC chip from ADV to convert a HDMI to HD-SDI or SDI ( Coaxial or Composite video )

I have a circuit for converting HDMI to VGA using ADV7513 which inturn will be converted to SDI using another circuit . But this process will be complex than i thought , so I am requesting you to send a circuit diagram for converting HDMI to SDI using latest ADV chip as I could purchase from Analog Devices to finish the design .

Regards,

Raja.

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  • The AD724 will not do what you need.

    The ADV7612 will convert HDMI into a parallel bus video stream.  One of the Semtech SDI transmitter chips will convert the parallel bus video into a SDI stream.  If you ignore audio, it makes everything simpler.

    There are 2 basic items that need to be defined

    1) What is the color space and bus format that the ADV7612 can output that the SDI trasmitter chip can input.  They must match

    2) What is going to initialize both parts on power up and respond to format changes.

    Please review Semtech GS2972 documentation to understand the SDI transmitter input requirements.

    Note: I have never used a Semtech SDI transmitter however I would begin learning the technology by studying the documentation to see how's it done.  Other vendors also make similar parts.

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  • The AD724 will not do what you need.

    The ADV7612 will convert HDMI into a parallel bus video stream.  One of the Semtech SDI transmitter chips will convert the parallel bus video into a SDI stream.  If you ignore audio, it makes everything simpler.

    There are 2 basic items that need to be defined

    1) What is the color space and bus format that the ADV7612 can output that the SDI trasmitter chip can input.  They must match

    2) What is going to initialize both parts on power up and respond to format changes.

    Please review Semtech GS2972 documentation to understand the SDI transmitter input requirements.

    Note: I have never used a Semtech SDI transmitter however I would begin learning the technology by studying the documentation to see how's it done.  Other vendors also make similar parts.

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