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Anti-pop circuit

  • US 8,063,699 B2
  • Filed: 06/19/2009
  • Issued: 11/22/2011
  • Est. Priority Date: 06/19/2009
  • Status: Active Grant
First Claim
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1. A reduced pop amplifier comprising:

  • an amplifier stage;

    an output stage comprising;

    a core output stage;

    an input to the core output stage coupled to the amplifier stage;

    an output of the core output stage and;

    a compensation network coupled between the output and the input;

    said compensation network comprising a capacitor, a first switch and a second switch;

    wherein the first switch breaks the connectivity between the output and the input when a control signal is low but maintains the connectivity between the input and the output when the control signal is high and the second switch shunts the capacitor to a low power voltage when the control signal is low, and wherein the control signal is low when the amplifier stage is powered down and remains low until after the amplifier stage is powered up and remains high until before the amplifier stage is powered down.

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