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LMX2594: output frequency is different from the set frequency

Part Number: LMX2594

Hi team,

One of our customer's issues, could you please provide some troubleshooting suggestions?

After powering on and stabilizing, check RESET in TICS, then remove the check before RESET, then write all register, and then check FCAL_EN. The output frequency set by TICS PRO is 10GHz, but the test output frequency is 10.5GHz. When using the default configuration of 7GHz, the output is also around 7.3GHz. Is there a deviation between the output frequency and the preset frequency because the calibration was not successful?

The test voltage of each pin in table 41 is shown in red font as follows

Configuration in TICS

Oscilloscope test results

Best Regards,

Amy Luo