100 kHz square wave oscillator

[KHzKid]

Hi all, I need to build a 100 kHz square wave oscillator as part of a project I'm undertaking.

I have designed a "gated oscillator" using the 4093 quad 2-input NAND schmitt trigger with a 100Ω resistor and 0.1f capacitor. Is this suitable?

Thanks for any help

 

[crutschow]

What is the frequency accuracy you need?

A gated oscillator can be turned off and on. Do you need that feature?

 

[KHzKid]

Thanks for the quick reply. No I don't need to turn the oscillator off and it doesn't have to be highly accurate.

Do you have another solution that i could consider?

 

[crutschow]

For a single chip solution you could use the clock circuit in the MM5369.

 

[KHzKid]

Thanks, I'll take a look tomorrow. The datasheet has fried my brain lol

 

[Hero999]

What about the good old 555 timer?

 

[audioguru]

An ordinary Cmos CD4093 cannot drive an oscillator resistor as low as 100 ohms. Use 10k and reduce the capacitor value to 0.001uF.

 

[DaVaDa]

Single version of CD4093?

I have a good square wave oscillator circuit with the CD4093 using one resistor, one capacitor and just one of the 4 gates in the CD4093.
- I intend to make it on a print with only a minimum of PCB area. So I have tried to find "Single" version of the CD4093. But that have been without success until now. Is it really true that a single version with exactly the same features is "hard to find"?

 

[vortex2009]

100khz SQUARE-WAVE!!



Hi Khzkid,

Just Curious what are you building? be interesting to know... lol

cool