×

Residue-compensating A/D converter

  • US 6,556,158 B2
  • Filed: 03/05/2001
  • Issued: 04/29/2003
  • Est. Priority Date: 01/19/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for converting an analog input signal to a digital output signal comprising the steps of:

  • (a) generating a first digital signal comprising a signal component representing a combination of said analog input signal and a dithering signal;

    (b) generating an analog feedback signal by digital-to-analog converting said first digital signal;

    (c) generating an analog residue signal by combining said analog input signal and said analog feedback signal;

    (d) generating an analog compensation signal using a method comprising the step of processing said residue signal with a first analog filter of at least zeroth order;

    (e) generating said dithering signal using a method comprising the step of processing said analog residue signal with a second analog filter;

    the order said second analog filter is at least one higher than the order of said first analog filter;

    (f) generating a second digital signal comprising a signal component representing said analog compensation signal; and

    (g) generating said digital output signal by combining said first digital signal and said second digital signal.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×