At present, the phase-locked loop (PLL) chip LMX2594 is used to produce interference signals during frequency switching (Figure 1),
which will disappear automatically after the output is stable for a period of time.
Figure 1 Interference signals appear during frequency switching
(figure 2) Outputs R0[9] OUT_MUTE set to 1, R7[14] OUT_FORCE set to 0, execute Mute the outputs when the VCO is calibrating, but interference still exists. Later, R44[6] OUTA_PD was used to switch frequency 1: power down Output. After locking, : was configured to 0: Output A Active.
However, interference signals were found at the moment of Output. Is there a solution?
figure 2 Interference signals appear during frequency switching
