Arielle
Newbie level 6
Hi guys,
it's me again... with another question: I use resistive feedback to have a variable gain. Therefore I need a buffer at the output of my opamp. Until now I have an ideal buffer but the problem is that the real buffer should not have a dc level shift (like source follower) and it should be possible to drive at least 200kOhms resistances (rather less). Does anyone have a good architecture in mind?
Is it even possible to get such a thing?
Arielle
it's me again... with another question: I use resistive feedback to have a variable gain. Therefore I need a buffer at the output of my opamp. Until now I have an ideal buffer but the problem is that the real buffer should not have a dc level shift (like source follower) and it should be possible to drive at least 200kOhms resistances (rather less). Does anyone have a good architecture in mind?
Is it even possible to get such a thing?
Arielle