Crystal decoupling caps choice

[homemade24]

Crystal caps

I've been using the internal clock on my hobby Pic micro projects.
but now have a need to use a external crystal ( digikey #x1045-nd)
which the data sheet says use 10-20 pf load caps .
but I'm not sure what type is best (ceramic,film etc. )
just wondering what most use
thanks

 

[IanP]

Re: Crystal caps

Ceramic caps of ±10% tolerance are adequate for most applications ..

Rgds,
IanP

 

[pranam77]

Crystal caps

Ceramic caps will work fine..
Cheers

 

[homemade24]

Re: Crystal caps

thanks

 

[karesz]

Crystal caps

Hi,
The +/- 10% tolerance can be most time OK, but for better temperature stability is better to use +/-5% specified & COG/NPO typ ceramics...
Mosten are i.e. 18pF with typical layout capacitancies the solution, than a Quartz is fabricated (regularly) for 20pF.
K.