Where can the PSMR and PSRR parameters of high-speed data converters be obtained?

When I was reading the ADI article "Optimizing the Power System of Signal Link-Part 2: High Speed Data Converter", I found that the PSMR and PSRR parameters used in the content were not mentioned in the datesheet of the relevant data converter. What I want to ask is, how to get this parameter? Is there any official document describing these two parameters? Or do you want to measure it yourself?