Our requirement is that an Y/C NTSC video signal be converted to a PAL video.
We selected two amplifiers, a decoder and an encoder. We would like to know if the parts selected have proper compatibility and also serve our purpose.
On the input side we have selected ADA4830-2 as the amplifier. The input signal is 2V p-p pseudo differential unbalanced S-Video.
As per datasheet "closed-loop differential to single-ended gain of the video channel is internally fixed at 0.50 V/V (-6 dB) to ensure compatibility with video decoders whose input range is constrained to 1 V p-p or less".
The decoder which accepts this output is ADV7182 and accepts S-Video and converts to YCrCb. Also the amplifier converts pseudo differential input to single-ended which can be accepted by the decoder.
On the output side we are using ADV7391 as the video encoder for conversion of the YCrCb to S-Video, the output from this is a 1V p-p single-ended signal.
This is given to amplifier ADA4432-1, which having a gain of 2 can produce a 2V p-p pseudo differential unbalanced signal.
Attached the pictorial representation of the above said.
Please let us know if our understanding is correct and the parts selected are compatible.