Keeze Posted April 1, 2016 Report Share Posted April 1, 2016 Hi all, In the schematic for the Quad IIC Midi board, I find 15pF caps for running the crystal. I have only 22pF laying around (and used to use these with 16/20 Mhz crystals). Is there a specific reason to use 15pF or would 22pF do? Cheers, Kees Quote Link to comment Share on other sites More sharing options...
latigid on Posted April 1, 2016 Report Share Posted April 1, 2016 I would hazard a guess that the caps are 20% or worse tolerance anyway? Have a go I say. Quote Link to comment Share on other sites More sharing options...
Keeze Posted April 1, 2016 Author Report Share Posted April 1, 2016 That were my thoughts to, but always worth to check, tnx ;) Quote Link to comment Share on other sites More sharing options...
CJ55 Posted April 1, 2016 Report Share Posted April 1, 2016 The value of the caps depends also on the crystal/quartz. Some need 18pF, other 32pF for example. Check the data sheet of the crystal/quartz you are using. 1 Quote Link to comment Share on other sites More sharing options...
Keeze Posted April 1, 2016 Author Report Share Posted April 1, 2016 Found the datasheet... 10 to 32 pF, so 22 should do the trick Quote Link to comment Share on other sites More sharing options...
Keeze Posted April 2, 2016 Author Report Share Posted April 2, 2016 And working :) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.