Hi team,
The LMX2572 VCO calibrated 150 frequency points at room temperature. Reads back the values of VCO_SEL_force, VCO_CAPCTRL_force, VCO_DACISET_force and saves them in the flash of the MCU. At low temperatures of -40 degrees, power up the LMX2572, setting 150 frequency points in turn, and finding that about one third of the LMX2572 had some points unlocked. What could be the problem?
Best Regards,
Amy Luo