Sorry, but I open a new post 'cause it's more then 4 days that I try to reply to my previous question but the forum "reply" option is disabled. I don't know why, but I am wasting lot of time to complete my design. I have also tried to send an email but I got no response.
My question was:
" in my design I would adopt the AD8366 DVGA.
I want to ask a reference design or some guide lines in order to match the output and input of the AD8366 with the rest of the circuit:
- on the INPUT the signal is a 50Ohms single-ended.
- on the OUTPUT the AD8366 is connected to an ADC by mean of a twinax 100Ohms cable.
Could you please suggest the right matching solution for the AD8366 input and output? "
Moreover I want to add the simplified scheme of the parts that drive the AD8366 (attached).
The input is taken out of a Band Pass Filter made by discrete components (L and C) preceded by a gain block (ADL5530).
The ADC is differential: LTC2194.
Thank you in advance for your reply