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A differential difference comparator for multi-step A/D converters

  • Gang Xu
  • Jiren Yuan
Publiceringsår: 2003
Språk: Engelska
Sidor: 257-260
Publikation/Tidskrift/Serie: Proceedings - IEEE International Symposium on Circuits and Systems
Volym: 1
Dokumenttyp: Konferensbidrag
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.


The proposed Differential Difference Comparator (DDC) provides easy linear voltage summing/subtraction and comparison functions via current operation. The speed of this unconventional comparator drastically improved since there is no feedback loop and coupling capacitors needed to maintain the linearity. The linear input range is also enlarged by the common mode compression. The principle, design considerations and simulation results are presented based on a comparator used in an 8 bit 2-step A/D converter over 100 MS/s.


  • Electrical Engineering, Electronic Engineering, Information Engineering
  • Differential difference comparators (DDC)


Proceedings of the 2003 IEEE International Symposium on Circuits and Systems
  • ISSN: 2158-1525
  • ISSN: 0271-4310

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