Dear all .

I met some troubles in my circuit which is a college project. I am here cause I know that

someone here has ability to help me out .

Maybe my question is below :

In this circuit,the chip I used is MAX807NEWE,This is MAX807NEWE's datasheet:

http://www.hotenda.com/datasheet-item/2224093/MAX807NEWE%2B.html .

I would like to know how big the resistance that I need to choose so that my circuit can operate normally? How to

calculate it?
Your help will be appreciated!

Best Regards
Vicky