×

ANALOG-TO-DIGITAL CONVERTER

  • US 20090167587A1
  • Filed: 02/02/2007
  • Published: 07/02/2009
  • Est. Priority Date: 02/02/2006
  • Status: Active Grant
First Claim
Patent Images

1. An analog-to-digital converter (ADC) comprising:

  • an input switch;

    an array of binary-weighted capacitors, the array of capacitors receiving the input voltage signal via the input switch in an on state of the input switch;

    a plurality of switches, each switch connected in series with a respective one of the capacitors at an opposite side compared to the input switch, wherein a VDD signal is applied to each switch in one switching state and ground in another switching state;

    a comparator having as one input a voltage from the input switch side of the array of capacitors and as another input a voltage of VDD/2; and

    a successive approximation register (SAR) coupled to an output of the comparator for controlling the switches based on the output from the comparator.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×