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ADS6125: Power supply

Jingtai
Genius 4575 points

Part Number: ADS6125
Other Parts Discussed in Thread: TPS82085, , TSW40RF80EVM

Do AVDD and DRVDD power suppliers require LDO? I have not foun out the power supply recommendation from the data sheet.

  • 0
    TI__Mastermind 29220 points

    Hi,

    The ADS6125 does not require an LDO, it simply requires a 'clean' power supply for the AVDD.   At the time that the EVM was released for the ADS6125 we used an LDO to get a clean supply voltage for the AVDD.  Since that time we have better switching power supplies available and we have used switching supplies for a number of newer data converters.   For example, we have used the TPS82085 for the data converters on the TSW40RF80EVM - both of which may be seen on the TI web.   We have not gone back and done experiments with the use of a switching supply for the ADS6125, but again the real requirement is a clean, low-noise supply without any large component of extraneous frequency getting onto it. 

    Regards,

    Richard P.

  • 0 in reply to Richard Prentice
    Genius 4575 points
    Thanks for your support.