How to use a transformer to make from a specific resistance to 50 ohm?

 

what does a transformer have to do with opamp?

 

Hello TimaV

You're looking for an OpAmp with an output impedance of 50 Ohms ??. . . Or Its input ??

Or want to know how to use a transformer which has an impedance of 50 Ohms ?

 

How to use a transformer to make from a specific resistance to 50 ohm?

Sorry we cannot understand that. Please restate your problem. Do use lots of words. Do not use abbreviations or undefined acronyms.

 

Draw pictures if possible. Clear communication is imperative if you want helpful, accurate, useful answers.

 

How to use a transformer to make from a specific resistance to 50 ohm?

The transformation of impedence is "square of the turns ratio". If a transformer has a 1:2 turns ratio, the impedence "x" on the "1" side will be seen as "4x" on the "2" side.

 

There are opamps such as LM6181 designed to drive 50-ohm loads.