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Variable attenuator

  • US 6,339,356 B1
  • Filed: 06/30/2000
  • Issued: 01/15/2002
  • Est. Priority Date: 07/02/1999
  • Status: Expired due to Term
First Claim
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1. A variable attenuator comprising:

  • an attenuator circuit having a signal path; and

    a control circuit coupled to provide control signals to the attenuator circuit based on data stored in a memory circuit to establish a selected attenuation for the signal path of the variable attenuator, wherein the attenuator circuit comprises at least two current sources coupled to receive the control signals from the control circuit to establish bias current in selected PIN diodes of the attenuator.

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