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Bifet VCO With Improved Frequency Range

IP.com Disclosure Number: IPCOM000035349D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-28

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Buchholtz, TC Richetta, RA Schmerbeck, TJ [+details]


An integrated general-purpose VCO for phase-locked loops is described herein. The frequency of the VCO is set by a control voltage that is converted to a current by external resistors. The frequency of the VCO is proportional to this current. The circuit is novel in that it uses the frequency controlling input current to improve the frequency range of operation. (Image Omitted)