If it is a crystal oscillator, try optimizing the load capacitors. Put a low tolerance capacitor and also choose capacitor whose value varies negligible with temperature like X7R Cap or so. Regards Vinod A H Echostar On Thu, Mar 17, 2011 at 9:16 PM, Vincent Zeng <vzeng@xxxxxxxxxxx> wrote: > I am seeking some good advice on this subject. We did found the some > oscillator has more than spec frequency shift at different temperature and > would like to take this under control on the board level test. Any > suggestions? > Thank you in advance > > Best Regards > > Vincent Zeng > > Tel: 408-333-6598; Fax: 408-333-4891 > 130 Holger Way, San Jose, CA 95134 > Email: vzeng@xxxxxxxxxxx > EXTRAORDINARY NETWORKS; > CONNECTING THE FUTURE > > > > ï?? Please consider Green > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu