Abstract: An integrated device package sized and shaped to fit in a small space, such as within a body lumen or cavity of a human patient, is disclosed. The integrated device package includes a package substrate and integrated device dies. The first and second integrated device dies are angled relative to one another about the longitudinal axis by a fixed non-parallel angle.

Abstract: Aspects of this disclosure relate to detecting and recording information associated with electrical overstress (EOS) events, such as electrostatic discharge (ESD) events. For example, in one embodiment, an apparatus includes an electrical overstress protection device, a detection circuit configured to detect an occurrence of the EOS event, and a memory configured to store information indicative of the EOS event.

Abstract: Electrical overstress protection of microelectromechanical systems (MEMS) are disclosed herein. In certain embodiments, a MEMS radio frequency system includes a MEMS device electrically connected along a radio frequency signal path that handles a radio frequency signal, and an electrical overstress protection circuit in shunt with the radio frequency signal path and operable to protect the MEMS device from an electrical overstress event, such as an electrostatic discharge (ESD) event received on the radio frequency signal path. The electrical overstress protection circuit includes a metal conductor configured to resonate about at a fundamental frequency of the radio frequency signal.

Abstract: Techniques for a sinking and sourcing power stage are provided. In an example, a power stage circuit can include a first power transistor configured to couple to a first input power rail, a second power transistor configured to couple to a second input power rail, an output node configured to couple to a load and to couple the first power transistor in series with the second power transistor between the first and second input power rails, and a controller configured to operate the first and second power transistors in a first mode to source current to the load and to operate the first and second power transistors in a second mode to sink current from the load.

Abstract: System and methods for reducing nonlinearity in radio frequency (RF) circuitries (e.g., RF switch circuitry and/or RF amplifier circuitry) are provided. A high-linearity RF integrated circuit device includes an input port; an output port; nonlinear circuitry arranged on a signal path between the input port and the output port; a shunt path including signal adjustment circuitry; and adjustable nonlinearity generation circuitry coupled to the signal adjustment circuitry, the adjustable nonlinearity generation circuitry including one or more metal-oxide-semiconductor (MOS) devices; and at least one nonlinearity generation activation element connected in parallel with a source terminal and a drain terminal of a first MOS device of the one or more MOS devices and responsive to an activation control signal. The nonlinear circuitry may include at least one of switching circuitry or amplifier circuitry. The shunt path may be coupled to the input port or the output port.

Abstract: A time-of-flight (ToF) transmitter with self-stabilized optical output phase with minimal overhead is described, where the transmitter may either function as a slave in that the laser pulse phase and width can be controlled by the master ToF receiver, or it can function as a master where the laser control pulse is generated on the same chip or a companion chip. When the ToF transmitter functions as a slave and receives the laser pulse control signal, the techniques of this disclosure can transform the receive path and the pre-driver circuit into part of a delay locked loop (DLL).

Abstract: This disclosure describes techniques to detect an object. The techniques include operations comprising: receiving an image captured by overhead camera; identifying a region of interest (ROI) of a plurality of regions within the image; selecting an object classifier from a plurality of object classifiers based on a position of the identified ROI relative to the overhead camera; and applying the selected object classifier to the identified ROI; and detecting presence of the object within the ROI in response to applying the selected object classifier to the identified ROI.

Abstract: In an optical detection system, features of interest can be identified from ADC circuitry data prior to inter-circuit communication with downstream object or target processing circuitry. In this manner, a volume of data being transferred to such downstream processing circuitry can be reduced as compared to other approaches, simplifying the receive signal processing chain and providing power savings. First-tier signal processing circuitry to identify features of interest can be located on or within a commonly-shared integrated circuit package with ADC circuitry, and downstream processing circuitry for object processing or range estimation can be fed with a data link meeting less stringent requirements than a link between the ADC circuitry and first-tier signal processing circuitry.

Abstract: The present disclosure provides a magnetic sensor system for monitoring the position of the rotor relative to the stator for use in electronic motor commutation. The system uses two magnetic sensors with a back bias magnet, the magnetic sensors being configured to detect changes in the magnetic field direction caused by the magnetic field interacting with two moveable targets that are being rotated by the motor shaft. The unique phase shift between the signals measured at each sensor can thus be used to determine the relative position between the stator and the rotor. In this respect, the system makes use of the Nonius or Vernier principle to measure rotational displacement, however, the scale of the encoder is defined by the number of motor pole pairs.

Abstract: Disclosed herein is a symmetric split planar transformer in the context of a DC-DC isolated converter. The symmetric split planar transformer reduces or eliminates asymmetry in the distribution of parasitic capacitance across the isolation barrier going from one end to another end of a primary coil, and as a result, undesirable electromagnetic interference (EMI) due to common mode dipole emission across the isolation barrier may be reduced. In some embodiments, the primary winding is split into at least a first coil and a second coil, each occupying a different area side-by-side on a substrate. The transformer is symmetric in the sense that a capacitive coupling of the first coil to a secondary winding is the same as a capacitive coupling of the second coil to the secondary winding, such that common mode EMI may be reduced. Each coil may include stacked spiral coil portions in multiple metal planes to increase inductive density across the isolation barrier.

Abstract: Disclosed herein are proximity detection sensor arrangements, as well as related methods and devices. In some embodiments, a sensor arrangement in an electronic device may include a first circuit layer including a proximity pad and a first reference pad, and a second circuit layer including a second reference pad and a temperature pad. The first circuit layer may be between the second circuit layer and a user-facing surface of the electronic device, the first reference pad may be electrically coupled to the second reference pad, and the first reference pad may be between the temperature pad and the user-facing surface.

Abstract: Improved overcurrent detection and mitigation systems, methods, and techniques for a BMS are described herein. A BMS monitor may detect an overcurrent using two different techniques. The first technique may detect an overcurrent based on average power over different, overlapping time periods. The second technique may detect an overcurrent based on determining a modeled junction temperature of a switching device.

Abstract: Techniques for generating a diagnostic waveform for a sensor are provided. In an example, a control circuit for an electrochemical sensor can include power supply inputs configured to receive a supply voltage, a first signal generator configured to receive control information and to generate a first signal on a first output using the supply voltage and the control information, a second signal generator configured to receive the control information and to provide a second signal on a second output, using the supply voltage and the control information. An output voltage between the first output and the second output, in a diagnostic mode of operation of the control circuit, can include a periodic signal having a peak-to-peak voltage greater than the supply voltage.

Abstract: Embodiments of the present disclosure may monitor and adjust a sampling rate of an ADC for converting the power signal to a digital signal, locking onto the phase and frequency of the power signal. This technique may make the sampling process coherent relative to the power signal. Properties of the power signal, such as phase, frequency, and magnitude, may be extracted relative to an idealized power signal.

Abstract: A system includes a magnetic sensor that can store a magnetic state associated with a number of accumulated turns of a magnetic target. The magnetic sensor may work in conjunction with a magnetic target. The magnetic target may produce a magnetic field that, at some positions, drops below a magnetic window of the magnetic sensor. The magnetic target may produce a magnetic field that is within the magnetic window when needed to update the magnetic state of the sensor to keep track of the accumulated turns of the magnetic target. The magnetic sensor may be initialized with one or more domain walls.

Abstract: An integrated circuit package can contain a semiconductor die and provide electrical connections between the semiconductor die and additional electronic components. The integrated circuit package can reduce stress placed on the semiconductor die due to movement of the integrated circuit package due to, for example, temperature changes and/or moisture levels. The integrated circuit package can at least partially mechanically isolate the semiconductor die from the integrated circuit package.

Abstract: A switching power converter circuit comprises a single inductive circuit element; a common control loop circuit coupled to a circuit input and the inductive circuit element and including switching circuit elements to charge the inductive circuit element using energy provided at the circuit input; at least one current sensing circuit configured to sense inductor current of the inductive circuit element; one or more output control loop circuits that each include switching circuit elements activated to generate an output voltage; and one or more pulse width modulation (PWM) circuits configured to generate a PWM control signal to activate the switching circuit elements of the output control loop circuits and to change a peak voltage of the PWM control signal of the one or more PWM circuits according to the inductor current.

Abstract: Systems and methods for detecting magnetic turn counter errors with redundancy are provided. In one aspect, a magnetic field turn sensor system includes a magnetic field angle sensor having a sine bridge and a cosine bridge and first to third comparators configured to compare the outputs from the sine and cosine bridges. The system further includes a processor configured to receive outputs from each of the first to third comparators, determine that a combination of the outputs from the first to third comparators corresponds to an invalid state, and indicate a fault in response to determining that the combination of the outputs from the first to third comparators corresponds to the invalid state.

Abstract: Electrochemical sensors can include at least two electrodes, over which an electrolyte is formed. The electrodes can be isolated from one another in order for reduction/oxidation reactions to occur at the electrodes and for an electric current to flow therebetween. The present disclosure describes the use of a barrier in the electrochemical sensor that is configured to isolate electrodes from one another for the purpose of preventing electrode shorting. Additionally, the physical structure of the barrier can also act as a stencil for shaping the electrodes.

Abstract: Embodiments of the present disclosure describe frequency detection techniques for detecting power irregularities. These irregularities may include variations or abnormalities in switched-mode power supply circuit switching behavior, power spikes, and/or output oscillations. The frequency detection techniques may compare different frequency components of the power signal to detect irregularities.