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Method for implementation of a low noise, high accuracy current mirror for audio applications

  • US 20060119496A1
  • Filed: 12/09/2004
  • Published: 06/08/2006
  • Est. Priority Date: 12/03/2004
  • Status: Active Grant
First Claim
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1. An accurate high current circuit, comprising:

  • a) a current mirror circuit;

    b) a first high current circuit comprising a first plurality of transistor devices connected in parallel and a second high current circuit comprising a second plurality of transistor devices connected in parallel;

    c) a first high current interconnect metallization connected to the first plurality of transistor devices to receive an input current and a second high current interconnect metallization connected to the second plurality of transistor devices to connect from the second high current circuit an output current equal to said input current;

    d) a source voltage distribution circuit distributing a same value of said source voltage to a symmetrical array of transistor devices comprising the first plurality of transistor devices and the second plurality of transistor devices; and

    e) said current mirror circuit coupled to said first and second high current circuit controlling the first plurality of transistors devices to have a drain voltage equal to a reference voltage and produces from the second plurality of transistor devices said output current centered around the reference voltage.

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