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ADV7802 HD frequency response down -1.5dB at 30 MHz.

Question asked by JayFlora on Nov 22, 2010
Latest reply on Dec 14, 2010 by JayFlora

The ADV7802 decoder has limited frequency response at 30 MHz. I have tried driving the decoder with different filter impedances, peaked the response of the input signal with amplitude equalization, and added a buffer for low impedance drive. The 30 MHz. response is always 1.5 - 2.0 dB down at 30 MHz. relative to the multiburst signal applied. The input signal is measured with a scope probe and the output freq response measure with an SDI waveform monitor.

Any ideas to correct this limitation?

The setup file I am using is attached.

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