Method and apparatus for providing dynamic multi-stage signal amplification in a medical device

  • US 7,948,369 B2
  • Filed: 08/02/2010
  • Issued: 05/24/2011
  • Est. Priority Date: 04/14/2007
  • Status: Active Grant
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First Claim
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1. A method, comprising:

  • coupling an input terminal of a first amplifier to a signal source, the first amplifier including an output terminal configured to provide a first output signal;

    coupling an input terminal of a second amplifier to the output terminal of the first amplifier, the second amplifier including an output terminal configured to provide a second output signal, wherein the first output signal is a predetermined ratio of the second output signal, and the first output signal and the second output signal are associated with a monitored analyte level of a user;

    operatively coupling an analog to digital (A/D) converter to the output terminals of the first and second amplifiers; and

    providing a processor to receive the first output signal and the second output signal, the processor operatively coupled to the A/D converter and processing the one or more signals received at the one or more first amplifier output terminal and the second amplifier output terminal,wherein providing the processor to receive the first output signal and the second output signal includes comparing the one or more signals received at the one or more first amplifier output terminal and the second amplifier output terminal to a predetermined threshold value, and processing a signal associated with one of the one or more signals received at the first amplifier output terminal and the second amplifier output terminal when another signal associated with the other one of the signals received at the first amplifier output terminal and the second amplifier output terminal exceeds the predetermined threshold value.

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