The Application relates to optically transparent electrostatic transducers. In some embodiments, the transducers comprise graphene. Such transducers are capable of functioning as acoustic sensors and/or transmitters as a singulated device or in an array configuration. Also provided are methods of manufacturing and using such transducers.

The Application relates to optically transparent electrostatic transducers. In some embodiments, the transducers comprise graphene. Such transducers are capable of functioning as acoustic sensors and/or transmitters as a singulated device or in an array configuration. Also provided are methods of manufacturing and using such transducers.

An adaptive MEMS device includes a MEMS microphone and integrated circuitry, wherein the integrated circuitry is electrically connected to the MEMS microphone. The integrated circuitry reads out an output signal from the MEMS microphone and provides the output signal or a rendered output signal, via a first integrated interface, to an external processing device. Additionally, the integrated circuitry determines, at run-time, diagnostic data on the current condition of the MEMS device and provides, at run-time, the diagnostic data, via a second integrated interface, to the external processing device.

A MEMS device includes a MEMS sound transducer, and control circuitry. The control circuitry includes a supply signal provider for providing a high-level supply signal and read-out circuitry for receiving an output signal from the MEMS sound transducer, and a switching arrangement for selectively connecting the MEMS sound transducer to the supply signal provider, and for selectively connecting the MEMS sound transducer to the read-out circuitry based on a control signal. The control circuitry provides the control signal having an ultrasonic actuation pattern to the switching arrangement during a first condition TX of the control signal, wherein the ultrasonic actuation pattern of the control signal triggers the switching arrangement for alternately coupling the high-level supply signal to the MEMS sound transducer.

The disclosure describes devices and methods for implementing impedance matching. The device may be implemented on an integrated circuit that includes a communication protocol interface circuit, a first signal output terminal, a first output driver circuit, and a controller. The first output driver circuit is coupled to the controller and has a corresponding plurality of parallel driver stages, each driver stage including a driver and a configurable resistance coupling an output of the driver to the first signal output terminal (e.g., first contact). The configurable resistances of the first output driver form a first series terminated resistance. The controller is configured to adjust the configurable resistances to adjust the first series terminated resistance.

In one embodiment, a MEMS microphone can be coupled to an acoustic horn to provide various benefits and improvements including, but not limited to, at-a-distance acoustic signal reception with improvements in signal-to-noise ratio and directional preference.

In one embodiment, a MEMS microphone can be coupled to an acoustic horn to provide various benefits and improvements including, but not limited to, at-a-distance acoustic signal reception with improvements in signal-to-noise ratio and directional preference.

A sensor including one or more transistors; and one or more sensing elements, wherein an edge behaves as moving gate of said one or more transistors, an electric field is applied to said edge, said one or more transistors is/are biased, said one or more sensing elements is/are flexible, source and drain wells of said one or more transistors can be coplanar or stacked, said edge can move in a lateral or a parallel direction with respect to a transistor current, said edge can move in a vertical or a perpendicular direction with respect to said transistor current, and the magnitude of the change in said drain current determines the sensitivity.

A sensor including one or more transistors; and one or more sensing elements, wherein an edge behaves as moving gate of said one or more transistors, an electric field is applied to said edge, said one or more transistors is/are biased, said one or more sensing elements is/are flexible, source and drain wells of said one or more transistors can be coplanar or stacked, said edge can move in a lateral or a parallel direction with respect to a transistor current, said edge can move in a vertical or a perpendicular direction with respect to said transistor current, and the magnitude of the change in said drain current determines the sensitivity.

A microelectromechanical system (MEMS) microphone includes a cavity to receive an acoustic signal. The acoustic signal causes movement of a diaphragm relative to one or more other surfaces, which in turn results in an electrical signal representative of the received acoustic signal. A light sensor is included within the packaging of the MEMS microphone such that an output of the light sensor is representative of a light signal received with the acoustic signal. The output of the light sensor is used to modify the electrical signal representative of the received acoustic signal in a manner that limits light interference with an acoustical output signal.