Charge injection reduction technique in single and multi-reference switching amplifiers

  • US 6,937,090 B2
  • Filed: 08/28/2001
  • Issued: 08/30/2005
  • Est. Priority Date: 08/28/2000
  • Status: Expired due to Term
First Claim
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1. In a switching amplifier of the type wherein one or more references are coupled to a load through gated switches controlled by a pulse-width modulated input signal, the improvement comprising:

  • adding a minimum pulse width of the same polarity to a pair of switching devices simultaneously, one on either side of the load, to null the common-mode output presented to the load.

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