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ADV7180 Design Related Queries

Question asked by RiteshRP on Jul 3, 2010
Latest reply on Jul 6, 2010 by DaveD


This is my second post today regarding ADV7180BCPZ. These are basically design related queries as mentioned below,

1. In my design only CVBS input is used which I plan to connect to AIN1. I saw the discussion 3161 where Dave has mentioned that unused inputs should be connected to AGND. I would like to know whether unused inputs should be connected directly to AGND or through 0.1uF capacitor?

2. Does Analog devices have any recommended circuit for protecting the Video input from ESD and EMI (Compliance and susceptibility)?

3. As per the datasheet the power supply voltages needs to be clean and well regulated. In our design we use SMPS (Buck converter) for generating 3.3V and 1.8V supply. Does Analog have any recommended filter for the same or supply specifications like voltage ripple, regulation?

4. I will be using two Video decoders in my design, so what is the recommended way for connecting Analog and Digital ground?

Thanks & Regards,