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US 12,323,160 B2Granted
Filters
AssigneeCirrus Logic, Inc.
InventorJohn P. Lesso
Life of this patent
Estimating the term…
Abstract
An analog filter, comprising, a first-time encoding machine (TEM); and a first delay element.
Claims22
An analog feedback comb filter, comprising:
- a first time-encoding machine (TEM);
- a first feedback loop;
- and
- a first delay element provided in the first feedback loop.
1 more element
A biquadratic analog filter, comprising:
- a first time-encoding machine (TEM);
- a first feedback loop comprising a first delay element;
- a second feedback loop comprising the first delay element and a second delay element;
- a first feedforward loop comprising the first delay element;
- and
- a second feedforward loop comprising the second delay element and a third delay element.
3 more elements
An analog filter, comprising:
- a first time-encoding machine (TEM);
- a first delay element comprising one or more first inverters connected in series;
- a plurality of delay locked loops each configured to generate a respective reference voltage;
- and
- control circuitry configured to cycle between each of the respective reference voltages to be provided as a supply voltage to control a delay of the one or more first inverters of the first delay element.
2 more elements
An analog filter, comprising:
- a first time-encoding machine (TEM);
- a first delay element comprising one or more first inverters connected in series;
- and
- one or more delay locked loops each configured to generate a supply voltage to control a delay of the one or more first inverters, the one or more delay locked loops each comprising a delay line switchable between comprising one or more second inverters connected in series and comprising the one or more first inverters of the first delay element.
1 more element
An analog filter, comprising:
- a first time-encoding machine (TEM);
- a first delay element comprising one or more first inverters connected in series;
- one or more delay locked loops each configured to generate a supply voltage to control a delay of the one or more first inverters, the one or more delay locked loops comprising a digital delay line comprising a plurality of second inverters;
- and
- control circuitry configured to control the number of second inverters provided in the delay line.
2 more elements
An analog filter, comprising:
- a first time-encoding machine (TEM);
- a first feedback loop;
- a first delay element provided in the first feedback loop;
- and
- a first resistance provided in the first feedback loop.
2 more elements
Dependencies are inferred from the claim text.