Patent ID: 11894807
Assignee: APPLE INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. Oscillator circuitry comprising:
an oscillator having a variable capacitor 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 variable capacitor 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;

a level detector disposed in the feedback path, the level detector having inputs coupled to the output of the resonator and configured to output a signal for controlling the variable capacitor; and
an output buffer having inputs coupled to the level detector, wherein the resonator is coupled between the oscillator and the inputs of the output buffer.