Abstract: The present disclosure proposes a coil sensor circuit including a sensor coil configured to provide an AC sensor signal, a feedforward amplifier stage configured to amplify the AC sensor signal to obtain an amplified sensor signal, a feedback amplifier stage coupled between an output and an input of the feedforward amplifier stage and configured to provide a control signal for cancelling a DC offset of the feedforward amplifier stage, and a switching circuit The switching circuit is configured to, during a first operational mode of the coil sensor circuit, couple the sensor coil to the input of the feedforward amplifier stage, and, during a second operational mode of the coil sensor circuit, decouple the sensor coil from the feedforward amplifier stage, and increase a gain of the coil sensor circuit with respect to the first operational mode.

Abstract: An exemplary embodiment of a sensor system includes a magnet system which is designed to generate a magnetic field. Furthermore, the sensor system includes a first magnetic field sensor which is movable in a first direction relative to the magnet system and has a first distance from the magnet system in a second direction perpendicular to the first direction. The sensor system also includes a second magnetic field sensor which is movable in the first direction relative to the magnet system and has a second distance from the magnet system in the second direction, the second distance being greater than the first distance.

Abstract: The present disclosure relates to circuits for detecting a line short circuit and/or a line interruption in a differentially operated line network, comprising at least one control circuit configured to control at least one common-mode signal of the differentially operated line network vis-à-vis a predefined common-mode signal variable and to indicate a line short circuit and/or a line interruption in the differentially operated line network if at least one control or controlled variable of the control circuit exceeds a predefined threshold value.

Abstract: The present disclosure relates to chopper amplifier circuits with inherent chopper ripple suppression. Example implementations can realize a doubly utilized chopper amplifier circuit that is a current-saving circuit with a wake-up function that is capable of providing a self-wake signal in order to change into a fast, low-jitter/low-latency mode, and to provide a wake-up signal for a sleeping microprocessor or a system in response to signal changes.

Abstract: The described techniques address issues associated with hybrid current or magnetic field sensors used to detect both low- and high-frequency magnetic field components. The hybrid sensor implements a DC component rejection path in the high-frequency magnetic field component path. Both digital and analog implementations are provided, each functioning to generate a DC component cancellation signal to at least partially cancel a DC component of a current signal generated via the high-frequency magnetic field component path. The hybrid sensor provides a high-bandwidth, high-accuracy, and low DC offset hybrid current solution that also eliminates the need for DC decoupling capacitors in the high-frequency path. A modification is also described for implementing a Sigma-Delta (??) quantization noise reduction path to reduce the quantization noise and to improve accuracy.

Abstract: A stress sensor includes a semiconductor substrate with a first transistor arrangement and a second transistor arrangement. The first transistor arrangement includes a first transistor with a first source-drain channel region and a second transistor with a second source-drain channel region. The first transistor and the second transistor are aligned relative to each other such that the current flow directions in the first and the second source-drain channel regions are opposite to each other. The second transistor arrangement includes a third transistor with a third source-drain channel region and a fourth transistor with a fourth source-drain channel region. The third transistor and the fourth transistor are aligned relative to each other such that the current flow directions in the third and the fourth source-drain channel regions are opposite to each other. The stress sensor generates a gradient-compensated output signal used to determine a mechanical stress acting on the semiconductor substrate.

Abstract: A device comprises a magnet and an angle sensor, wherein the angle sensor is configured to detect a rotation angle of the magnet. The device also contains a rotation counter, wherein the rotation counter is configured to record a number of rotations of the magnet. The angle sensor and the rotation counter are implemented in physically separate components.

Abstract: A device may determine a sensor identifier corresponding to a sensor integrated circuit (IC) associated with a sensor system. The device may provide the sensor identifier corresponding to the sensor IC. The device may receive, based on providing the sensor identifier, compensation parameter information associated with the sensor IC. The device may cause a set of compensation parameters, associated with the compensation parameter information, to be stored on a controller associated with the sensor system. The set of compensation parameters may include one or more parameters associated with correcting a measurement performed by the sensor IC or a safety result provided by the sensor IC.

Abstract: The present disclosure relates to a current sensor, including a magnetic-field sensor for measuring a magnetic field induced by an electrical current; an output connection for providing an amplified measurement signal from the magnetic-field sensor, the magnetic-field sensor and the output connection being connected by an analog signal path having at least one amplifier, the analog signal path having a frequency response; a temperature sensor for measuring a temperature; and a compensation circuit which is coupled to the analog signal path and is configured to correct the frequency response of the analog signal path based on the temperature.

Abstract: The described techniques address issues associated with hybrid current or magnetic field sensors used to detect both low- and high-frequency magnetic field components. The hybrid sensor implements a DC component rejection path in the high-frequency magnetic field component path. Both digital and analog implementations are provided, each functioning to generate a DC component cancellation signal to at least partially cancel a DC component of a current signal generated via the high-frequency magnetic field component path. The hybrid sensor provides a high-bandwidth, high-accuracy, and low DC offset hybrid current solution that also eliminates the need for DC decoupling capacitors in the high-frequency path. A modification is also described for implementing a Sigma-Delta (??) quantization noise reduction path to reduce the quantization noise and to improve accuracy.

Abstract: A magnetic sensor apparatus includes a magnetic field generating circuit which is configured to generate a magnetic field, a magnetic field sensor circuit which is configured to output a sensor signal in response to the magnetic field, which sensor signal has a signal amplitude dependent on a sensitivity of the magnetic field sensor circuit, an amplifier circuit which is configured to amplify the sensor signal and to output an amplified sensor signal with an amplified signal amplitude, and a control circuit which is configured to use a setting signal to set a supply signal of the magnetic field sensor circuit and/or a gain of the amplifier circuit such that the amplified signal amplitude corresponds to a target amplitude.

Abstract: Disclosed is a re-configurable sensor arrangement (100) including a sensor device (110) and a controller device (120), both being configured to communicate with each other, wherein the controller device (120) is configured to transmit a pulse modulated signal (130) to the sensor device (110) via a one-wire voltage interface (140), and wherein the sensor device (110) is configured to receive the pulse modulated signal (130) via the one-wire voltage interface (140) and to re-configure its internal configuration in response to the received pulse modulated signal (130).

Abstract: Magnetic field sensor apparatuses are discussed. A magnetic field sensor apparatus in accordance with one example implementation in this case comprises a coil and a magnetic field sensor. A chip carrying the coil and the magnetic field sensor is arranged on a leadframe. The leadframe comprises a cutout.

Abstract: Systems and methods are provided for which a chopper modulator and a chopper demodulator of a chopped apparatus having a variable chopper frequency are described. A feedback path is used to reduce ripples and/or remaining offsets as a result of the variable chopper frequency.

Abstract: The subject matter described herein relates to a semiconductor circuit arrangement with a semiconductor substrate with an integrated Hall sensor circuit. During a first clock phase PHspin1 a first electrical voltage signal ±VHallout(PHspin1) or ±VHallbias(PHspin1) can be generated in the Hall effect region that has a first dependency on a mechanical stress of the semiconductor substrate. During a second clock phase PHspin2 a second electrical voltage signal ±VHallout(PHspin2) or ±VHallbias(PHspin2) can be generated in the Hall effect region that has a second dependency on a mechanical stress of the semiconductor substrate. The semiconductor circuit arrangement is designed to ascertain a specific mechanical stress component based on a combination of the first electrical voltage signal ±VHallout(PHspin1) or ±VHallbias(PHspin1) and of the second electrical voltage signal ±VHallout(PHspin2) or ±VHallbias(PHspin2).

Abstract: A bandgap reference circuit includes a bandgap reference core circuit that includes a first bipolar transistor having a first emitter current density and a first base-emitter voltage, a second bipolar transistor having a second emitter current density that is smaller than the first emitter current density and having a second base-emitter voltage, a resistor that is connected to the emitter of the second bipolar transistor, and a differential amplifier circuit that is configured to control first and second emitter currents through the first and second bipolar transistors, respectively, such that a sum of the second base-emitter voltage and a voltage drop across the resistor approximates the first base-emitter voltage. The bandgap reference circuit further includes a first replica bipolar transistor that emulates an operating point of the first bipolar transistor and a second replica bipolar transistor that emulates an operating point of the second bipolar transistor.

Abstract: The described techniques address issues associated with hybrid current or magnetic field sensors used to detect both low- and high-frequency magnetic field components. The hybrid sensor implements a DC component rejection path in the high-frequency magnetic field component path. Both digital and analog implementations are provided, each functioning to generate a DC component cancellation signal to at least partially cancel a DC component of a current signal generated via the high-frequency magnetic field component path. The hybrid sensor provides a high-bandwidth, high-accuracy, and low DC offset hybrid current solution that also eliminates the need for DC decoupling capacitors in the high-frequency path. A modification is also described for implementing a Sigma-Delta (??) quantization noise reduction path to reduce the quantization noise and to improve accuracy.

Abstract: The present disclosure relates to chopper amplifier circuits with inherent chopper ripple suppression. Example implementations can realize a doubly utilized chopper amplifier circuit that is a current-saving circuit with a wake-up function that is capable of providing a self-wake signal in order to change into a fast, low-jitter/low-latency mode, and to provide a wake-up signal for a sleeping microprocessor or a system in response to signal changes.

Abstract: The described techniques address issues associated with hybrid current or magnetic field sensors used to detect both low- and high-frequency magnetic field components. The hybrid sensor implements a DC component rejection path in the high-frequency magnetic field component path. Both digital and analog implementations are provided, each functioning to generate a DC component cancellation signal to at least partially cancel a DC component of a current signal generated via the high-frequency magnetic field component path. The hybrid sensor provides a high-bandwidth, high-accuracy, and low DC offset hybrid current solution that also eliminates the need for DC decoupling capacitors in the high-frequency path. A modification is also described for implementing a Sigma-Delta (??) quantization noise reduction path to reduce the quantization noise and to improve accuracy.

Abstract: Apparatuses and methods for analog-digital conversion and corresponding systems having a sensor and an apparatus of this type are provided. Demodulation is executed with no variable preamplification, followed by continuous-time analog-digital conversion, at least in time segments, which further employs chopper techniques.