Abstract: A MEMS device is provided comprising a substrate; a proof mass coupled to the substrate and configured to move along a resonator axis; a drive structure comprising at least one electrode and configured to drive the proof mass to move along the resonator axis; and a pivoting linkage coupled to the proof mass at first and second ends of the pivoting linkage, the first end comprising a first fixed pivot and the second end comprising a second fixed pivot, the pivoting linkage comprising: a first bar configured to pivot about the first fixed pivot and a first dynamic pivot; a second bar configured to pivot about the second fixed pivot and a second dynamic pivot; and a third bar configured to pivot about the first dynamic pivot and the second dynamic pivot, wherein the proof mass moves along the resonator axis when the pivoting linkage pivots.

Abstract: A UHV-LV interface circuit that is capable of the following, among other things: 1) starting up a primary controller of a power converter circuit with a precisely controlled startup charging profile; 2) performing pulse-based line-voltage sensing with reduced power and improved sensing accuracy; and 3) discharging a capacitor, e.g., class-X2 capacitor, with a stable supply voltage for the controller. The UHV-LV interface circuit can use a single UHV device, such as a single depletion-mode transistor, e.g., field-effect transistor (FET).

Abstract: The battery monitoring techniques described herein may be used for detection of battery anomalies or faults. Also, the battery monitoring techniques described herein may be used to generate estimates of total battery capacity. The battery monitoring techniques may employ an alternating current frequency response (ACFR) of the battery. The ACFR response of the battery may be used to detect anomalies and/or estimate a total capacity of the battery.

Abstract: An integrated device package is disclosed. The package can include a package substrate and an integrated device die having active electronic circuitry. The integrated device die can have a first side and a second side opposite the first side. The first side can have bond pads electrically connected to the package substrate by way of bonding wires. A redistribution layer (RDL) stack can be disposed on a the first side of the integrated device die. The RDL stack can comprise an insulating layer and a conductive redistribution layer. The package can include a passive electronic device assembly mounted and electrically connected to the RDL stack.

Abstract: A test system can receive a test signal from a device under test (DUI) via a first signal path. A comparator circuit can receive the test signal and, in response, generate an intermediate output signal based on a magnitude relationship between the test signal a comparator reference signal. A compensation circuit can generate a correction signal that is complementary to a portion of the received test signal, such as to correct for loading effects of the first signal path. The test system can include an output circuit configured to provide a corrected differential output signal that is based on a combination of the intermediate output signal and the correction signal.

Abstract: Controller circuitry can employ a method to provide control signals to bridge switches operating an inductor for switched-mode inductive buck-boost voltage regulation. The buck mode can operate the bridge switches in a buck current control mode when the input voltage exceeds the output voltage. The boost mode can operate the bridge switches in a boost current control mode when the output voltage exceeds the input voltage. The buck-boost transition mode can operate the bridge switches in a peak buck-boost current control mode that minimizes a minimum duty cycle (having a minimum “on” duty time and a minimum “off” duty time) when the output voltage is approximately equal to the input voltage during a transition from at least one of the current control buck mode to the current control boost mode or from the current control boost mode to the current control buck mode.

Abstract: An optical system for receiving light scanned from different light origination locations in space can include a Liquid Crystal (LC) waveguide (LCW), including first and second LCW light ports. A beamsteering LC electrode can be included in or coupled to the LCW and can be configured to vary a receiving direction of light received at the second LCW light port in response to a varying electrical input signal applied to the LC electrode to scan receiving of light at the second LCW light port from different light origination locations in space. A photodetector can be optically coupled to the first LCW light port, such as to detect waveguided light from different light origination locations in space received in response to the varying electrical input signal applied to the first LC electrode. Ranger, bright-spot locking, laser detection, direct detect and coherent lidar, wavelength detection, and other techniques and use cases are possible.

Abstract: Aspects of the embodiments are directed to non-contact systems, methods and devices for optical detection of objects in space at precise angles. This method involves the design and fabrication of photodiode arrays for measuring angular response using self-aligned Schottky platinum silicide (PtSi) PIN photodiodes (PN-diodes with an intrinsic layer sandwiched in between) that provide linear angular measurements from incident light in multiple dimensions. A self-aligned device is defined as one in which is not sensitive to photomask layer registrations. This design eliminates device offset between “left” and right” channels for normal incident light as compared to more conventional PIN diode constructions.

Abstract: System and apparatus for robust, portable gas detection. Authentication is a key element for content protection. This invention makes the authentication fast and reliable by hiding the authentication, keeping the authentication, and regaining the lost authentication. The embodiments in this invention reduce the complexity and power consumption of the operation significantly.

Abstract: An array of optical filters having a front side and a back side is disclosed. The array of optical filters includes first and second optical filters and a molding compound. The first and second optical filters each include a substrate having a back surface coplanar with the back side of the molding compound, and a filter layer having a front surface coplanar with the front side of the molding compound. The molding compound covers the sidewalls of the filter substrates and filter layers, and fills gaps between the filters.

Abstract: Systems and methods that integrate a directional coupling function with directivity that does not have output loss are disclosed. For example, a power amplifier circuit arrangement includes an input terminal to receive an input signal; amplifier circuitry including a first amplifier stage, a second amplifier stage, and a virtual ground node, where an input of the first amplifier stage is coupled to the input terminal, an output of the first amplifier stage is coupled to an input of the second amplifier stage via the virtual ground node, and an output of the second amplifier stage is coupled to the input of the first amplifier stage via feedback circuitry; an output terminal coupled to the output of the second amplifier stage, the output terminal to output an amplified signal; and a directional coupler terminal coupled to the virtual ground node.

Abstract: Various examples are directed to a frequency-compensated amplifier circuit comprising a first multi-stage amplifier comprising a first amplifier input node, a first amplifier output node, and a first amplifier intermediate node. A first feedback path between the first amplifier input node and the first amplifier output node comprises a feedback resistance. A second feedback path between the first amplifier output node and the first amplifier intermediate node comprises a first capacitor and a portion of the feedback resistance. A first switch circuit may be electrically coupled to the first capacitor and to the feedback resistance. The first switch circuit may have a first state in which the first capacitor is coupled to a first tap point of the feedback resistance and the portion of the feedback resistance has a first value.

Abstract: An electronic module is disclosed. The electronic module can include a package substrate, an integrated device die, a dam structure, and a mounting compound. The integrated device die can have an upper side, a lower side, and an outer side edge. The dam structure can have a first sidewall and a second sidewall opposite the first sidewall. The second sidewall can be nearer to the outer side edge than the first sidewall. The first sidewall can be laterally positioned between a center of the lower side of the integrated device die and the outer side edge. The dam structure can be disposed between a portion of the package substrate and a portion of the lower side of the integrated device die. The mounting compound can be disposed between the lower side of the integrated device die and the package substrate. The dam structure can be positioned between the mounting compound and the outer side edge of the integrated device die.

Abstract: Devices exchange control signals with each other to ensure proper operation of an overall system. For instance, in a communication system, a baseband processor and a transceiver communicate with each other to exchange information for controlling the respective signal processing parts of the baseband processor and the transceiver. While Serial Peripheral Interfaces (SPIs) can be used, SPI can be extremely slow, and does not provide a protocol for allowing a complex set of control signals to be exchanged between the baseband processor and transceiver. The present disclosure describes a fast control interface which can support various modes of operation in allowing two devices to communicate with each other quickly and effectively.

Abstract: An electronic circuit comprises an error amplifier and an overshoot and undershoot detection circuit. The error amplifier has an output stage including a differential input to single ended output amplifier that includes a frequency compensation resistor. A switch circuit is connected across the frequency compensation resistor that shunts the frequency compensation resistor when activated. The overshoot and undershoot detection circuit compares differential input nodes of the output amplifier to a baseline voltage signal and activates the switch circuit when detecting an overshoot condition or an undershoot condition using the baseline voltage signal.

Abstract: Aspects of the present application allow for measurement of a calibrated resistance for a resistive film in a sensing element, such that effects from contact resistance and background resistance drifts due to factors such as temperature, strain or aging can be reduced or eliminated. In some embodiments, by taking a plurality of two-terminal resistance measurements between various pairs of electrodes on a resistive film, a contact-resistance-independent resistance of a reference portion of the resistive film can be determined. Further, a contact-resistance-independent resistance of a sensing portion of the resistive film can be determined based on a plurality of two-terminal resistance measurements between pairs of electrodes. The resistance of the reference portion can be removed from the measured resistance of the sensing portion, such that variations in the reference portion resistance that are not caused by a sensed environmental condition may be compensated.

Abstract: An extensional mode electrostatic microelectromechanical systems (MEMS) gyroscope is described. The MEMS gyroscope operates in an extensional mode. The MEMS gyroscope comprises a vibrating ring structure that is electrostatically excited in the extensional mode.

Abstract: Provided herein are apparatus and methods for a multi-stage signal-processing circuit. The signal-processing circuit can include multiple configurable stages that can be cascaded and configured to process an input signal. Control circuitry can be used to select an output of the configurable stages. Serial data can be recovered with good signal integrity using a signal monitor with the configurable stages by virtually placing the signal monitor on a buffered output node.

Abstract: Systems and methods for improving noise efficiency in a Delta Sigma modulator. A bypass scheme for a noise splitter is disclosed that reduces toggling activity for small signals. In particular, a sample-by-sample bypass noise splitter is disclosed that includes a noise splitting module and a bypass line. The bypass line bypasses the noise splitting module when signals are below a selected threshold, increasing efficiency of the system.

Abstract: A chest-worn sensor device, such as a device for daily at-home monitoring of cardiopulmonary health conditions, includes an audio and/or visual interface that provides cues to assist a user in performing a measurement sequence. The sensor device may detect whether there are any body posture issues or device contact issues. In response to detecting an issue, the sensor device provides and audio and/or visual cue to the user indicating the issue. The sensor device may provide additional cues throughout the measurement sequence, such as a cue that a measurement is being taken, a cue for the user to change body posture, and a cue for the user to remove the sensor device.