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Problem when use Controller Mode of AD8318 with VGA ADL5330

Question asked by Steven_zhu on Jan 21, 2016
Latest reply on Jan 21, 2016 by Steven_zhu

I have a question When I use Controller Mode of AD8318 with a VGA like ADL5330.Why the Vout of the power detector have to be negative sense while the gain control voltage of the VGA must have a positive sense? Could I use a positive sense power detector like ADL5513 with VGA ADL5330 to achieve accurate power control?

Thank you!