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ADS5560: ADS5560

Alexander Dobrik
Prodigy 10 points
Part Number: ADS5560


Good day!

I'm finding pipeline ADC (for example ADS5560) for my applications, and I have fixed that some ADC's hasn't Power Supply Rejection parameter,

but someone has. Also I have seen the same in 12-bit SAR ADC's (there is no PSR/PSRR) in datasheet.

I can't understand why?

  • 0
    TI__Mastermind 18095 points

    You are correct that many of the high speed ADC devices do not specifically specify PSRR; however, a clean supply is important to maintain best SNR and SFDR performance.  

    For best performance, it is best to use low noise LDO for power supply of the ADC and associated clock circuitry.  You can check out the approach used on the EVM that is found in the ADS5560EVM User's Guide that is found on ti.com.

    --RJH