3 Typical Measurement
3.1 Category 3 Synchronization
Use the flow chart in the data sheet to determine the phase synchronization category. If it is a category 3
synchronization, there is limitation to the reference clock frequency and the timing of the SYNC signal with
respect to the reference clock is critical. Shown below is a category 3 synchronization example.
Figure 3-1. Category 3 TICS Pro Configuration
If it is a category 3 synchronization, VCO_PHASE_SYNC should be checked to put the devices in SYNC mode.
After programming, the outputs from the two LMX2594 devices may not be phase-aligned.
Figure 3-2. Output Phases Before Synchronization
Typical Measurement
6
LMX2594PSEVM Evaluation Instructions
SNAU278 – JULY 2022
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