hi , i want to design a circuit for generating 100khz frequency triangular wave. i have no idea how to start with op-amp resistance value and circuit. if u know please share.

 

Triangle waves are easy. You will need a very high speed op amp for 100Khz though.

 

please tell me, which op-amp is best and easily available in market .

 

That depends on where you live. We encourage people to list their location in their profile for just such a question. If you look at my post you will see where I live in general terms.

So I can't answer your question directly. Maybe this will help some...

High Speed Op Amp Query

 

Hello,

Here is a list of high speed opamps from National:
Operational_Amplifiers_High_Speed_greater_than_50MHz.xls.txt

Remove the .txt and open it in MS-excel or OO-calc.

Bertus