Abstract: Examples of the present disclosure provide an electronic device in a package, the electronic device comprising a first circuit having a temperature sensitive behavior and a second circuit being switchable between a first operating mode and at least one second operating mode. A power consumption of the second circuit in the first operating mode is higher than a power consumption of the second circuit in the second operating mode. The electronic device comprises a controller configured to switch the second circuit into the first operating mode during a first time interval and into the second operating mode during a second time interval. The controller is further configured to cause an additional power consumption in the electronic device during the second time interval to reduce or compensate a difference between an overall power consumption of the electronic device during the first time interval and the second time interval.

Abstract: According to embodiments described herein, a circuit includes an interface circuit configured to be coupled to a transducer and a detection circuit. The interface circuit is configured to provide a digital output signal to a signal input terminal of a processing circuit. The detection circuit is configured to receive the digital output signal and provide a low power enable signal to a low power enable terminal of the processing circuit. In the various embodiments, the digital output signal is based on a transduced signal from the transducer and the low power enable signal is determined by comparing the digital output signal with a first threshold.

Abstract: According to an embodiment, a sensor circuit includes a sigma-delta analog to digital converter (ADC), a dithered clock coupled to the sigma-delta ADC, and a supply voltage circuit coupled to the sigma-delta ADC. The sigma-delta ADC is configured to be coupled to a low frequency transducer, and the dithered clock is configured to control of the sigma-delta ADC based on a dithered clock signal.

Abstract: According to an embodiment, a transducer system includes a transducing element and a symmetry detection circuit. The transducing element includes a signal plate, a first sensing plate, and a second sensing plate. The symmetry detection circuit is coupled to a differential output of the transducer element and is configured to output an error signal based on asymmetry in the differential output.

Abstract: According to an embodiment, a transducer system includes a transducing element and a symmetry detection circuit. The transducing element includes a signal plate, a first sensing plate, and a second sensing plate. The symmetry detection circuit is coupled to a differential output of the transducer element and is configured to output an error signal based on asymmetry in the differential output.

Abstract: According to an embodiment, a device includes a power supply terminal configured to provide a power supply signal to a plurality of functional components and a power supply shaping circuit coupled to the power supply terminal. The power supply shaping circuit is configured to determine a variation signal of the power supply signal and shape changes in the power supply signal by controlling a dummy load coupled to the power supply terminal based on the variation signal.

Abstract: A measurement method includes generating, by a sensor, a response signal in response to an excitation signal. The method also includes generating a sampling clock signal in accordance with a pseudo-random jitter, and sampling the response signal in accordance with the sampling clock signal to determine a plurality of digital samples. The method also includes combining the plurality of digital samples to form a measurement sample.

Abstract: According to an embodiment, a transducer system includes a transducing element and a symmetry detection circuit. The transducing element includes a signal plate, a first sensing plate, and a second sensing plate. The symmetry detection circuit is coupled to a differential output of the transducer element and is configured to output an error signal based on asymmetry in the differential output.

Abstract: According to an embodiment, a sensor circuit includes a sigma-delta analog to digital converter (ADC), a dithered clock coupled to the sigma-delta ADC, and a supply voltage circuit coupled to the sigma-delta ADC. The sigma-delta ADC is configured to be coupled to a low frequency transducer, and the dithered clock is configured to control of the sigma-delta ADC based on a dithered clock signal.

Abstract: According to various embodiments, a circuit includes a charge pump and a feedback circuit. The charge pump includes a first input, a second input configured to receive an offset signal, and an output terminal configured to provide a charge pump signal based on the first and second inputs. The feedback circuit includes a first input coupled to the output of the charge pump, a second input configured to be coupled to a reference signal, an enable input configured to enable and disable the feedback circuit, and a feedback output coupled to the first input of the charge pump.

Abstract: According to embodiments described herein, a circuit includes an interface circuit configured to be coupled to a transducer and a detection circuit. The interface circuit is configured to provide a digital output signal to a signal input terminal of a processing circuit. The detection circuit is configured to receive the digital output signal and provide a low power enable signal to a low power enable terminal of the processing circuit. In the various embodiments, the digital output signal is based on a transduced signal from the transducer and the low power enable signal is determined by comparing the digital output signal with a first threshold.

Abstract: A measurement method includes generating, by a sensor, a response signal in response to an excitation signal. The method also includes generating a sampling clock signal in accordance with a pseudo-random jitter, and sampling the response signal in accordance with the sampling clock signal to determine a plurality of digital samples. The method also includes combining the plurality of digital samples to form a measurement sample.

Abstract: An embodiment includes a method of performing a measurement using a micro-electro-mechanical system (MEMS) device that includes a plurality of MEMS sensors having different resonant frequencies. The method includes applying an excitation signal to a first port of the MEMS device such that each of the plurality of the MEMS sensors is stimulated by the excitation signal. The method further includes measuring a signal at a second port of the MEMS device and determining a measured value based on the measuring the signal.

Abstract: In accordance with an embodiment, a method of performing a measurement with a capacitive sensor includes generating a periodic excitation signal that includes a series of pulses and smoothing edge transitions of the series of pulses to form a shaped periodic excitation signal that includes a flat region between the smoothed edge transitions. The method further includes providing the shaped periodic excitation signal to a first port of the capacitive sensor and measuring a signal provided by a second port of the capacitive sensor.

Abstract: According to embodiments described herein, a circuit includes an interface circuit configured to be coupled to a transducer and a detection circuit. The interface circuit is configured to provide a digital output signal to a signal input terminal of a processing circuit. The detection circuit is configured to receive the digital output signal and provide a low power enable signal to a low power enable terminal of the processing circuit. In the various embodiments, the digital output signal is based on a transduced signal from the transducer and the low power enable signal is determined by comparing the digital output signal with a first threshold.

Abstract: A microphone or a microphone sensor system operates with a sensor interface that receives a supply voltage at a supply terminal. The sensor interface detects a command at the supply terminal based on a change in the supply voltage and communicates the command or data related to the command to a component of the sensor system. The supply terminal is a bidirectional terminal that further communicates data related to the sensor system via the supply terminal.

Abstract: A microphone or a microphone sensor system operates with a sensor interface that receives a supply voltage at a supply terminal. The sensor interface detects a command at the supply terminal based on a change in the supply voltage and communicates the command or data related to the command to a component of the sensor system. The supply terminal is a bidirectional terminal that further communicates data related to the sensor system via the supply terminal.

Abstract: In accordance with an embodiment, an interface circuit includes a variable voltage bias generator coupled to a transducer, and a measurement circuit coupled to an output of the transducer. The measurement circuit is configured to measure an output amplitude of the transducer. The interface circuit further includes a calibration controller coupled to the bias generator and the measurement circuit, and is configured to set a sensitivity of the transducer and interface circuit during an auto-calibration sequence.

Abstract: In accordance with an embodiment, an interface circuit includes an amplifier configured to be coupled to a transducer, a first bypass circuit coupled to a first voltage reference and the amplifier, a second bypass circuit coupled to the first voltage reference and the amplifier, and a control circuit coupled to the second bypass circuit. The first bypass circuit conducts a current when an input signal amplitude greater than a first threshold is applied to the transducer and the control circuit causes the second bypass circuit to conduct a current for a first time period after the first bypass circuit conducts a current.

Abstract: According to an embodiment, a transducer system includes a transducing element and a symmetry detection circuit. The transducing element includes a signal plate, a first sensing plate, and a second sensing plate. The symmetry detection circuit is coupled to a differential output of the transducer element and is configured to output an error signal based on asymmetry in the differential output.