Current teading circuit for controlling gain error

Current teading circuit for controlling gain error

  • CN 1,503,212 A
  • Filed: 11/26/2002
  • Published: 06/09/2004
  • Est. Priority Date: 11/26/2002
  • Status: Active Application
First Claim
Patent Images

1. , a kind of current steering circuit in order to the ride gain mistake comprises:

  • One electric current input node couples one first circuit paths, and this first circuit paths is when one first operator scheme, and this electric current input node draws electric current certainly;

    One comparer couples this electric current input node, and this comparer is when this first operator scheme, draw the minute quantity electric current from this electric current input node, but this comparer is when one second operator scheme, and this electric current input node draws a large amount of electric currents certainly, so that this first circuit paths transfer current certainly;

    AndOne current mirror couples this comparer, and this current mirror is kept current flow by a second circuit path when this second operator scheme, then do not keep when this first operator scheme.

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