According to the datasheet of AD9544, I have made the following schematic for the system clock input:
R1 = 150R
R2 = 330R
However, I discovered that my TCXO deliver an 0.2Vdd - 0.8Vdd output (https://www.mouser.fr/datasheet/2/122/ECS-2520SMV-1628252.pdf).
And when I observe with the scope, it seems that the level output is smaller than this (output current too high?).
The System clock reference input path specifications specifies that Input voltage must be 0.9V minimal for high level and 0.5v maximal for low level.
When I observe the TCXO output with a scope, I see 0.84V-2.3V (Low - HIGH).
When I observe the XOA input with a scope, I see 930mV-590mV (Low - HIGH).
I tried to put other resistor value as well and I observe the following value for R1=330R , R2=470R :
TCXO output : 0.86V-2.2V
XOA input : 976mV-544mV
Is there any resistor and capacitor adjustement for make the ad9544 works with this TCXO?