I am thinking using this oscilator(https://abracon.com/Oscillators/AST3TQ-28.pdf ) in AD9364. But voltage level of my oscilator is VOH : 2.4V and VOL = 0.4V. namely Vpp is 2V. I need a capacitive voltage dividing. In this case I am in little confusing. I read about some post regarding this problem ( https://ez.analog.com/wide-band-rf-transceivers/design-support/f/q-a/80684/ad9361-ref_clk-level/55967#55967). But I am not clear given answers in this post about voltage dividing. Which capacitor value should ı use for my oscillator for my voltage dividing?
1-) for example, in AD-COMMS5-EBZ, Vpp is 1.8V and capacitive divider consists of (39pF and 10pf(internal capacitance)) 1.8V *(39pf/(10pf+39pf))= 1.43Vpp(is must be between 0.8v and 1.3v). What is wrong my calculation? it is not in input level obligation
2-) Another question, is it necessarry for XTALN being VOL =-0.65 and VOH= +0.65V for VPP =1.3V. Is it possible VOL : 0.7V and VOH= 2V for VPP =1.3V?
[edited by: gcetinkaya at 9:02 PM (GMT -5) on 27 Jan 2021]