EMRFD Message Archive 14889

Message Date From Subject
14889 2018-06-26 07:23:36 richj_focus Sine to Squar wave
Hello:

I am looking for a circuit to convert a sine wave from a signal generator to logic level square wave.

The span of frequencies is audio to 500 mhz.

I have seen such circuits using un-buffered gates as amplifiers and video amplifiers but i can not find them again.

Thanks
Richard


14890 2018-06-26 07:32:50 Thomas S. Knutsen Re: Sine to Squar wave

Den tir. 26. jun. 2018 kl. 16:23 skrev richj45@gmail.com [emrfd] <emrfd@yahoogroups.com>:
 

Hello:

I am looking for a circuit to convert a sine wave from a signal generator to logic level square wave.

The span of frequencies is audio to 500 mhz.

I have seen such circuits using un-buffered gates as amplifiers and video amplifiers but i can not find them again.

Thanks
Richard


14893 2018-06-26 19:40:49 Dana Myers Re: Sine to Squar wave
14894 2018-06-27 00:02:59 Andy Re: Sine to Squar wave
The answer may depend on what you mean by "square".

Consider joining the "Time Nuts" email list   It has folks who need to do this stuff, with questions similar to yours.



Message archives may be viewed there.

I believe the Analog Devices ADCMP572 was one option for extremely fast signals (generally considered leading edge).

Regards,
Andy


14895 2018-06-27 03:06:30 Ashhar Farhan Re: Sine to Squar wave
You have specified this to 500 mhz. A series of mmics in cascode should do it. Try thr BGA612. 
- f

14897 2018-06-29 21:33:52 Andy Re: Sine to Squar wave
Then again, at 500 mHz, almost any op-amp is quick enough.

But you probably want 500 MHz, not 500 mHz.  ;-)  :-)

Andy


14898 2018-06-29 23:07:02 peter_dl8ov Re: Sine to Squar wave
No need to reinvent the wheel, have a look at this YouTube video where the input to a frequency counter is described:

https://www.youtube.com/watch?v=21_9Dspzu_w

Peter DL8OV