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WEBENCH® Tools/LMX2594EVM: Wrong output frequency for PLL

Part Number: LMX2594EVM

Tool/software: WEBENCH® Design Tools

On April 20, 2020, our company purchased 6 PLL products, model 595-LMX2594EVM, the output frequency is not right now, the earliest purchase is compared with the latest, use the software to configure the output frequency to 2.5G, the new PLL output frequency Around 3.5G, the old PLL is accurate, please help to confirm what is the problem? Please refer to the attachment for the picture. (In the picture, the blue one was bought last year, the white one was just bought on April 20 this year, and the red circle in the picture is the difference in appearance)