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US 12,712,509 B2Granted
Transients minimization of digital systems due to memory update
AssigneeInfineon Technologies AG
InventorsDietmar Straeussnigg, Florian Brame, David Andrew Russell
Life of this patent
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Abstract
A filter includes a delay line; at least one gain component coupled to the delay line; and a summer coupled to the delay line, wherein the at least one gain component includes a first value during a normal mode of operation, and wherein the at least one gain component includes a second value during a transient mode of operation.
Claims20
A digital microphone comprising:
- a programmable gain amplifier (PGA);
- an analog-to-digital converter (ADC) coupled to the PGA;
- a digital filter coupled to the ADC, wherein the digital filter comprises at least one gain component;
- and
- a digital gain compensation component coupled between an output of a first delay unit and an input of a second delay unit of the digital filter,
- wherein the at least one gain component comprises a first value during a normal mode of operation of the digital microphone, wherein the at least one gain component comprises a second value during a transient mode of operation of the digital microphone, and
- wherein the digital filter further comprises:
- a delay line including at least the first delay unit and the second delay unit;
- at least one gain component coupled to the delay line;
- and
- a summer coupled to the delay line.
8 more elements
A digital microphone comprising:
- a programmable gain amplifier (PGA);
- an analog-to-digital converter (ADC) coupled to the PGA;
- a digital filter coupled to the ADC, wherein the digital filter comprises at least one gain component;
- and
- a digital gain compensation component coupled between an output of a first delay unit and an input of a second delay unit of the digital filter,
- wherein the at least one gain component comprises a first value during a normal mode of operation of the digital microphone, and wherein the at least one gain component comprises a second value during a transient mode of operation of the digital microphone.
3 more elements
A method of operating a digital microphone, the method comprising:
- setting at least one gain component coupled between an output of a first delay unit and an input of a second delay unit of a filter of the digital microphone to a first gain value during a normal mode of operation of the digital microphone;
- and
- setting the at least one gain component of the filter of the digital microphone to a second gain value during a transient mode of operation of the digital microphone.
Dependencies are inferred from the claim text.