Invention Grant
US08284090B2 Method and apparatus for analog to digital conversion of small signals in the presence of a large DC offset 有权
存在大直流偏移的小信号的模数转换的方法和装置

  • Patent Title: Method and apparatus for analog to digital conversion of small signals in the presence of a large DC offset
  • Patent Title (中): 存在大直流偏移的小信号的模数转换的方法和装置
  • Application No.: US12728391
    Application Date: 2010-03-22
  • Publication No.: US08284090B2
    Publication Date: 2012-10-09
  • Inventor: Roberto Maurino
  • Applicant: Roberto Maurino
  • Applicant Address: US MA Norwood
  • Assignee: Analog Devices, Inc.
  • Current Assignee: Analog Devices, Inc.
  • Current Assignee Address: US MA Norwood
  • Agency: Kenyon & Kenyon LLP
  • Main IPC: H03M1/12
  • IPC: H03M1/12
Method and apparatus for analog to digital conversion of small signals in the presence of a large DC offset
Abstract:
Embodiments of the present invention provide a hybrid analog to digital converter that may include a DAC coupled to a hybrid analog to digital converter input; an integrator having an input coupled to the hybrid analog to digital converter input and the DAC, and generating an integrator output; a comparator coupled to the integrator output and having a comparator output; a successive approximation register coupled to the comparator output; and a counter coupled to the comparator output to generate an hybrid analog to digital converter output. The hybrid analog to digital converter may be operable as a successive approximation register converter and a continuous time sigma delta converter.
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