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LMX2572EVM: Check the Phase Noise at 100Hz

Part Number: LMX2572EVM
Other Parts Discussed in Thread: LMX2594EVM

Hello

I tested the Phase noise in TICS default mode.

However, the test results were check to be different from the specifications.

Test Data

Spec Data

There is a difference of about 17dBc/Hz at 100Hz.

Test conditions were the same as in the User Guide.

1. Why are the test results different from the specifications?

2. How can I check the same result as the specifications?

3. Why is the purchased LMX2572EVM different from the BOM in the user guide? (refer below)

user guide BOM : R25 - 51ohm, R30 - 51ohm, R4_LF - 0 ohm, R4_LF - 330 ohm

purchased LMX2572EVM : R25 - OPEN, R30 - OPEN, R4_LF - 18 ohm, R4_LF - 68 ohm

Best Regards.