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NOISE SHAPING IN A DIGITAL-TO-ANALOG CONVERTOR

  • US 20200136638A1
  • Filed: 10/30/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/31/2018
  • Status: Active Grant
First Claim
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1. A method for shaping low frequency noise comprising:

  • converting a binary input to a thermometric code;

    extracting signal information from the thermometric code;

    decimating the signal information;

    converting the signal information into a lower bit-count signal;

    upsampling the lower bit-count signal;

    applying mismatch shaping on a plurality of unit elements in the lower bit-count signal at a first DAC; and

    outputting from the first DAC a signal component of the lower bit-count signal.

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