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What is the maximum current drawn by PLL of AD9957 ?

Question asked by mathieu.chante on Jun 27, 2016
Latest reply on Jun 28, 2016 by mathieu.chante


I am currently using the AD9957, works pretty fine.

Nevertheless I noticed the current drawn by PIN3 (1V8 AVDD for PLL) is around 27 mA, according to the component DS (rev. D, pp46/64) it should be closer to 7 mA.

This could be an issue for our design, hence my questions :

  • Is this behaviour normal ?
  • What is the actual maximum current drawn by PIN3 of the chip ?


Thank you in advance for your quick reply.




M. Chante