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40MHz Xtal usage with uPSD

leorw
Associate
Posted on December 17, 2003 at 14:56

40MHz Xtal usage with uPSD

2 REPLIES 2
leorw
Associate
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
Associate
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]