i need a design for a sine to square converter for a high frequency of 50MHz using discrete components. please inform if you know. thank you.

 

Transistor comparator.

But you need high speed (i.e.. 500MHz) operation to get good squaring of a 50MHz signal. That sort of frequency requires great attention to RF design. Compactness, short traces, etc.

 

A pair of fast Shottky diodes would square it off. Some of them go down to .1ns Trr.

 

A pair of fast Shottky diodes would square it off. Some of them go down to .1ns Trr.

I've been meaning to ask this question for some time .
Do you mean a diode clamp circuit in which a shottky is put between the base and collector to prevent the transistor to go into heavy saturation therefore increasing speed and in this case the square wave "squareness"?

I first heard about it in some post by RonH

 

Do you mean a diode clamp circuit in which a shottky is put between the base and collector to prevent the transistor to go into heavy saturation ?

I was thinking about a very simple clipper, based on the lack of information in the question.

 

Hang on...I meant this. It will have symmetry about the zero axis.

 

No...

I think that #12 is talking about a back-to-back pair of shottky diodes between output and groung and a 50 ohm (or so) resistor between input and output.