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US 2026/0303047 A1Published application
Microphones with signal-to-noise ratio on-demand
OwnerJose Luis Ceballos, Andreas Wiesbauer +2inventors
InventorsJose Luis Ceballos, Andreas Wiesbauer, Fulvio Ciciotti, Christopher Igor Rogi
Life of this patent
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Abstract
A circuit includes a programmable gain amplifier to receive an analog input signal; an integrator having an input coupled to an output of the programmable gain amplifier; and a gain change component to monitor the analog input signal, and to change a gain of the programmable gain amplifier and a gain of the integrator based on the monitored analog input signal, wherein a gain change of the programmable gain amplifier is inversely related to a gain change of the integrator.
Claims20
A circuit comprising:
- a programmable gain amplifier configured to receive an analog input signal;
- an integrator having an input coupled to an output of the programmable gain amplifier;
- and
- a gain change component configured to monitor the analog input signal, and configured to change a gain of the programmable gain amplifier and a gain of the integrator based on the monitored analog input signal, wherein a gain change of the programmable gain amplifier is inversely related to a gain change of the integrator.
1 more element
A method comprising:
- receiving an analog input signal at an input of a programmable gain amplifier and amplifying, by the programmable gain amplifier, analog signal to form an amplified signal;
- integrating, by an integrator having an input coupled to an output of the programmable gain amplifier, the amplified signal;
- monitoring the analog input signal;
- and
- changing a gain of the programmable gain amplifier and a gain of the integrator based on the monitored analog input signal, wherein a gain change of the programmable gain amplifier is inversely related to a gain change of the integrator.
2 more elements
A circuit comprising:
- a circuit input for receiving an analog signal;
- a first amplifier having an input coupled to the circuit input;
- a second amplifier having an input coupled to an output of the first amplifier;
- an analog-to-digital converter (ADC) having an input coupled to an output of the second amplifier and output coupled to a circuit output;
- and
- a gain change component configured for monitoring the analog signal, the gain change component coupled to a gain change input of the second amplifier, and to a gain change input of an integrator in the ADC, wherein a gain change of the second amplifier is inversely related to a gain change of the integrator.
3 more elements
Dependencies are inferred from the claim text.