Part Number: ADC14C105 Other Parts Discussed in Thread: PGA870 Hello,
I didn't found the input impedance for this ADC in the datasheet. For some calculation and matching with a PGA870 I'm intessted in this data.
Do you can provide me this data.
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The ADC14C105 will have H2 and H3 performance on the order of 50-60dBFS for a signal near full scale at 980MHz. The attached pic shows performance for a -3dBFS, 980Hz input signal
Regards, Josh
well I'll reply myself :-) The 3/ is solved, the problem was in bad duty cycle to ADC (too much load on clkout0 in cmos mode).
Now it works well only SYNC_AUTO still doesn't seem to work without SYNC_QUAL. I use SYNC_INV for now which seems ok.
Just…
