AD9951/AD9954 has a residual Phase Noise @ 1 kHz Offset (40 MHz AOUT) REFCLK Multiplier Enabled @ 20× 25°C 105 dBc/Hz REFCLK Multiplier Enabled @ 4× 25°C 115 dBc/Hz REFCLK Multiplier Disabled 25°C 132 dBc/Hz If You take a clean 400MHz source and disable the intern multiplier you come up to -132 dBc !
I used a AD9951 (You can buy it from Farnell) for my HDR-2005 Receiver. However there are more sophisticated ham applications http://www.radioamatore.it/i0cg/add9951.html http://www.aririeti.it/articoli/ddsen.htm of I0CG, Giuliano and I0GLU, Giancarlo Regards Chris --- In [email protected], "gerard" <[EMAIL PROTECTED]> wrote: > Nice new device to get quadrature signals like the 9854 with 90% of power > saved...! > Unfortunatly, the DAC has only 10 bits instead of 12 or 14 (9951), so the > noise is a little more present. > > Thanks for the info, > > Gérard/F6EHJ > > ----- Original Message ----- > From: "domiuser" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Tuesday, August 30, 2005 3:35 PM > Subject: [soft_radio] New DDS from Analog Devices-AD9958 > > > >I have seen an New DDS Circuit > > on the AD Site called AD9958 > > I Think this is a perfect > > replace for the AD9854 ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
