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US 2019/0097577 A1Published application
Multi-Stage Oscillator with Current Voltage Converters
AssigneeHall Labs LLC
InventorsMarshall Soares, Richard N. Rea
Life of this patent
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Abstract
A current-mode, multi-stage oscillator converts an oscillating current to an oscillating voltage using one or more current voltage converters on one or more of the output stages of the multi-stage oscillator. The use of current voltage convertors transforms the low output swing (e.g., transistor threshold limited) of the oscillator into a rail-to-rail voltage oscillation with minimal jitter and operational stability over a wide temperature range.
Claims19
A multi-stage oscillator comprising:
- a plurality of oscillator stages with an equal bias current being supplied to and controlling each of the plurality of oscillator stages;
- at least one current voltage converter receiving the equal bias current, wherein at least one of the plurality of oscillator stages is coupled to the at least one current to voltage converter;
- wherein the first oscillator stage and the second oscillator stage and the third oscillator stage are coupled together;
- and
- wherein the at least one current to voltage converter provides a digital output signal.
2 more elements
A method of generating a oscillating signal comprising the steps of:
- supplying an equal bias current to a plurality of oscillator stages;
- supplying the equal bias current to at least one current voltage converter;
- supplying a signal from at least one of the plurality of oscillator stages to the at least one current voltage converter;
- supplying a signal from each of the plurality of oscillator stages to at least one of the plurality of oscillator stages in a ring topography;
- and
- generating a digital output signal from the at least one current voltage converter.
3 more elements
A multi-stage oscillator comprising:
- a first oscillator stage biased by a control current;
- a second oscillator stage biased by a control current;
- a third oscillator stage biased by a control current;
- a first current voltage converter coupled to an output of the first oscillator stage;
- a second current voltage converter coupled to an output of the second oscillator stage;
- a third current voltage converter coupled to an output of the third oscillator stage;
- wherein the first oscillator stage and the second oscillator stage and the third oscillator stage are all coupled together;
- a first output signal provided by the first current voltage converter;
- an optional second output signal provided by the second current voltage converter;
- and
- an optional third output signal provided by the third current voltage converter.
8 more elements
Dependencies are inferred from the claim text.