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sawtooth generator - RF Cafe Forums

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NOFX30

Post subject: sawtooth generator

Unread postPosted: Mon Mar 14, 2005 5:54 pm

Offline

Lieutenant

Joined: Mon Mar 14, 2005 5:51 pm

Posts: 4

I was wondering if there was anyone who knew how to make a very high frequency sawtooth generator, or possibly very clean high frequecny pulses to discharge a cap for sawtooth generation. everything i have tried is unaccecptable at the frequencies i am interested in.

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Profile

Guest

Post subject:

Unread postPosted: Mon Mar 14, 2005 9:15 pm

Um, how are we going to help you if you are having trouble at "the frequencies i am interested in" if you don't tell us what those frequencies are?

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Guest

Post subject:

Unread postPosted: Tue Mar 15, 2005 9:03 am

in the megahertz range

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Ming

Post subject:

Unread postPosted: Tue Mar 15, 2005 10:03 am

Offline

Lieutenant

User avatar

Joined: Tue Jan 13, 2004 8:42 am

Posts: 4

That's still not very specific. What's so hard about naming your frequency range? 1-10 MHz? 100-500 MHz? It makes a difference.

Here's a Maxim MAX038 waveform generator circuit for up to 20 MHz.

http://www.maxim-ic.com/appnotes.cfm/appnote_number/650

http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1257

This circuit probably goes beyond 50 MHz

http://www.elecdesign.com/Articles/Inde ... cleID=6198

The best thing to do probably is call some of the IC vendors and talk to an applications engineer. They'll know right away if they have a solution, and the advice is free.

Ming

Posted  11/12/2012

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