Back to results
US 12,676,579 B1Granted
Crystal oscillators including a two stage amplifier
AssigneeInfineon Technologies Americas Corp.
InventorsNandakishore Raimar, Blessy Mathew
Life of this patent
Estimating the term…
Abstract
A crystal oscillator includes a two stage amplifier and a crystal. The two stage amplifier includes a transconductance amplifier stage electrically connected to a class AB output amplifier stage with open loop drive level control. The two stage amplifier provides a negative resistance. The crystal is electrically connected between an input of the two stage amplifier and an output of the two stage amplifier.
Claims20
A crystal oscillator comprising:
- a two stage amplifier comprising a transconductance amplifier stage electrically connected to a class AB output amplifier stage with open loop drive level control, the two stage amplifier to provide a negative resistance;
- and
- a crystal electrically connected between an input of the two stage amplifier and an output of the two stage amplifier.
A device comprising:
- a crystal oscillator to generate a clock signal, the crystal oscillator comprising:
- a two stage amplifier comprising a transconductance amplifier stage electrically connected to a class AB output amplifier stage with open loop drive level control, the two stage amplifier to provide a negative resistance;
- and
- a crystal electrically connected between an input of the two stage amplifier and an output of the two stage amplifier;
- and
- a circuit electrically connected to the crystal oscillator and configured to operate based on the clock signal.
3 more elements
A method for generating a clock signal, the method comprising:
- amplifying an input signal on a first terminal of a crystal via a two stage amplifier to provide an output signal on a second terminal of the crystal, the two stage amplifier comprising a transconductance amplifier stage and a class AB output amplifier stage with open loop drive level control, the two stage amplifier to provide a negative resistance;
- and
- generating a clock signal based on the output signal.
Dependencies are inferred from the claim text.