Adjustable frequency oscillator with programmable...

Details Adjustable frequency oscillator with programmable... Adjustable frequency oscillator with programmable...

2005-04-19

2005-04-19

Pascal, Robert (Department: 2817)

Oscillators

Ring oscillators

C331S00100A

Reexamination Certificate

active

06882231

ABSTRACT:
An adjustable frequency oscillator circuit includes: an odd number of inverters connected so as to form a loop; a plurality of capacitive elements each connected to an output terminal of a respective inverter; and an output terminal, which supplies a signal oscillating at an oscillating frequency. The oscillator circuit further includes a calibration circuit for calibrating maximum currents which can be delivered by the inverters to the respective capacitive elements.

REFERENCES:
patent: 5406228 (1995-04-01), Hoang
patent: 5859571 (1999-01-01), Lee et al.
patent: 6369661 (2002-04-01), Scott et al.
patent: 6617935 (2003-09-01), Nguyen

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