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Low power integrated circuit white noise source
U.S. Patent Number: 5331217
Abstract: A low power white noise source is fabricated on an integrated circuit. The noise source includes a bipolar junction transistor (Q.sub.BJT) having an emitter terminal coupled to a common circuit potential, a collector terminal coupled to a source of current (CS), and a base terminal coupled through a resistance (R.sub.B) to a bias signal (V.sub.bias). The resistance has a resistance value selected to enhance a noise signal generated by the transistor in a collector current thereof. The noise source further includes a transresistance amplifier (AMP) having an input coupled to the collector terminal for converting the noise signal to a voltage signal (NOISE OUT) having white noise characteristics.
Inventors: Mellissinos; Anthony G. (Encinitas, CA)
Assignee: Hughes Aircraft Company (Los Angeles, CA)
Application Number: 07/900,965
Issued: 1994-07-19
Expired: 2006-07-19
Classes: 327/100 ; 327/554; 331/78
Field of search: 307/260,264 328/165 331/149 330/78
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