Oscillator with Fin Field-Effect Transistor (FinFET) Resonator
AssigneeApple Inc.
InventorsHarald Pretl, Ehrentraud Hager, Aly Ismail
Life of this patent
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Abstract
An integrated circuit may include oscillator circuitry having a resonator formed from fin field-effect transistor (FinFET) devices. The resonator may include drive cells of alternating polarities and sense cells interposed between the drive cells. The resonator may be connected in a feedback loop within the oscillator circuitry. The oscillator circuitry may include an amplifier having an input coupled to the sense cells and an output coupled to the drive cells. The oscillator circuitry may also include a separate inductor and capacitor based oscillator, where the resonator serves as a separate output filter stage for the inductor and capacitor based oscillator.
Claims20
Oscillator circuitry comprising:
- an oscillator having an oscillator output at which an oscillating signal is generated;
- and
- a resonator configured to filter the oscillating signal and having drive terminals coupled to the oscillator output,
- sense terminals, and
- fin field-effect transistor (FinFET) circuitry coupled to the drive and sense terminals.
Oscillator circuitry comprising:
- an oscillator having an adjustable component and configured to output an oscillating signal;
- and
- a resonator having an input configured to receive the oscillating signal from the oscillator and having an output that is coupled to the adjustable component via a feedback path, the resonator having
- drive terminals coupled to the oscillator output,
- sense terminals, and
- fin field-effect transistor (FinFET) circuitry coupled to the drive and sense terminals.
Oscillator circuitry comprising:
- an oscillator having a quality factor;
- and
- a resonator configured to receive signals from the oscillator and to increase an overall quality factor of the oscillator circuitry to be greater than the quality factor of the oscillator, the resonator having
- drive terminals coupled to the oscillator output,
- sense terminals, and
- fin field-effect transistor (FinFET) circuitry coupled to the drive and sense terminals.
Dependencies are inferred from the claim text.