The Si5351A has three RF Outputs that I would like to have available on my LAB Test Bench, and I will also try it as replacement for both the VFO and BFO for my experimental Farhan Minima Transceiver. The Si5351A is programmed via I2C, which is similar to the Si570.
|Si5351A Three Port RF VFO|
I planned to install the Crystal next.
But then, . . . . Failure !
|Small Crystal - Big PCB Pattern|
(As Viewed Through the Microscope)
According to the Spec Sheet, the size of the CX3225SB Crystal only is 3.2 x 2.5 mm (0.125 x 0.098 inch). The Crystal is only about as big as one of the Pads of the four Pad Pattern that I used.
I will correct the Crystal Pad Pattern in the layout, and try AGAIN!
This is one of the down-sides of not using "Ugly Style" construction, many time there is NOT an acceptable recovery.
I am getting better-and-faster at creating Double-Sided Homebrew Toner Transfer PCBs, and better-and-faster at connecting the two sides with very small vias. So, . . . I guess when necessary, I can now, Fail Faster :-)
UPDATE: Apr 7, 2014 10:45
For future reference, the Crystal Pad Pattern that I fond that appears to fit is labelled "CFPX-5". It is interesting to note that "Pin 1" is not marked, "Pin 2" is the indexed pin (see the inside filleted corner).