Other Parts Discussed in Thread: LMX2594,
Hello,
Our system uses an LMX2572 and an LMX2594, both with a category 3 SYNC. We must have a fully deterministic phase relationship after every tune, so we are forcing the VCO_SEL, VCO_DACISET and the VCO_CAPCTRL values on each frequency tune.
We have been unable to get the CAT3 SYNC to work reliably in the LMX2572, but we believe the CAT3 SYNC works fine in the LMX2594.
Are we attempting to use the LMX2572 in a way that is incompatible with the device's capability? Please confirm that the LMX2572 is capable of a CAT3 SYNC when forcing the VCO Calibration values.
Best Regards,
Chuck Beam