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Sampling rate of AD9042, AD9254


As per datasheet:

AD9042: 41MSPS, 595mW

AD9254: 150MSPS, 430mW

If I use these ADCs at a lower sampling rate say 20MSPS (if its possible) will the ADC run at a reduced power? If so, what will be the power consumption in the case of reduced sampling rate?


  • Hello,

    Yes, the power dissipated by ADC is proportional to its sampling rate. You can find the information in detail in the section " Power Dissipation and Standby Mode" on page 19 of AD9254 datasheet. I copy the equation and Figure from datasheet for your convenience.