40MHz Xtal usage with uPSD

leorw · ‎2003-12-17

Posted on December 17, 2003 at 14:56

leorw · ‎2011-05-17

Posted on May 17, 2011 at 11:57

Hi,

Does any one have a working xtal fundamnetal frequency filter example so that more commonly avaialble (and cheaper) 3rd overtone high frequency xtals may be used with uPSD internal xtal oscilator?[addsig]

petr23 · ‎2011-05-17

Posted on May 17, 2011 at 11:57

Hi,

try 1nF-10nF (4n7) SMD805 capacitor in serial with 1u5 or 2.2uH SMD0805 inductor between ground and XTAL2.

Petr

Quote:

On 2003-11-30 16:39, Leor wrote:

Hi,

Does any one have a working xtal fundamnetal frequency filter example so that more commonly avaialble (and cheaper) 3rd overtone high frequency xtals may be used with uPSD internal xtal oscilator?[addsig]