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Differential crystal oscillator

  • US 6,696,898 B1
  • Filed: 11/12/1999
  • Issued: 02/24/2004
  • Est. Priority Date: 11/12/1998
  • Status: Expired due to Term
First Claim
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1. A differential oscillator comprising:

  • a first transistor having first and second end terminals and a first control terminal;

    a second transistor having third and fourth end terminals and a second control terminal;

    means for coupling the first control terminal to one of the end terminals of the second transistor and the second control terminal to the corresponding end terminal of the first transistor;

    means for biasing the first and second transistors to oscillate;

    a differential output formed between corresponding end terminals of the first and second transistors; and

    a reference crystal connected across the differential output to establish a frequency across the differential output.

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