Abstract: In embodiments, an apparatus includes a controller configured to operatively couple to a sensor (e.g., a touch panel sensor, a fingerprint sensor). The sensor includes a plurality of drive electrodes and a plurality of sense electrodes. Nodes are formed at the intersections of the plurality of drive electrodes and the sense electrodes. The controller includes output circuitry operatively coupled to the plurality of drive electrodes. The output circuitry is configured to generate unique drive signals to drive corresponding drive electrodes of touch panel sensor. The touch panel controller also includes input circuitry operatively coupled to the sense electrodes. The input circuitry is configured to measure mutual-capacitance formed at each intersection of the plurality of drive electrodes to create an image of one or more objects proximate to the sensor.

Abstract: A mobile device configured to authenticate a user, an authentication system, and method for use of the mobile device and authentication system are described that include a biometric sensor, a touchscreen sensor, and/or a fingerprint sensor, where the biometric sensor, the touchscreen sensor, and/or the fingerprint sensor are coupled to a controller configured to authenticate a computing device user. In implementations, the mobile device that employs example techniques in accordance with the present disclosure includes an authentication device, including a biometric sensor configured to receive biometric information from the user; and a fingerprint sensor configured to receive fingerprint information from the user; and a controller configured to authenticate the user, where the authentication device, including the biometric sensor and the fingerprint sensor, is coupled to the controller.

Abstract: A fingerprint sensor is described that includes a thin protective cover layer on a sensor glass layer with receive circuitry between the thin protective cover layer and the sensor glass layer. In an implementation, a fingerprint sensor assembly includes a controller; a metal layer configured to be electrically coupled to the controller; a transmit layer electrically connected to the metal layer and the controller; a sensor glass layer including at least one through-glass via, where the transmit layer is disposed on a first side of the sensor glass layer, and where the transmit layer is electrically coupled to the at least one through-glass via; a receive layer disposed on a second side of the sensor glass layer, where the receive layer is electrically coupled to the at least one through-glass via; and a protective cover layer disposed on the receive layer.

Abstract: A capacitive touch panel that includes dielectric structures formed therein to modify capacitive coupling within the touch panel is disclosed. In one or more implementations, the capacitive touch panel includes elongated drive electrodes arranged next to one another and elongated sensor electrodes arranged one next to another across the elongated drive electrodes. The capacitive touch panel also includes a dielectric structure positioned over a sensor electrode to modify capacitive coupling within the capacitive touch panel.

Abstract: A gesture sensing device having a single illumination source is disclosed. In one or more implementations, the gesture sensing device includes a single illumination source configured to emit light and a light sensor assembly configured to detect the light reflected from an object and to output time dependent signals in response thereto. The gesture sensing device also includes a processing circuit coupled to the light sensor assembly and configured to analyze the time dependent signals received from the light sensor assembly to determine object directional movement proximate to the light sensor assembly.

Abstract: A current-sense circuit provides a fast and precise measure of current through a switch with the sensing circuit being protected from a high-voltage across the switch and from large transient currents through the switch when the switch is first closed. The sensed load current is connected through a first conductive path including the current switch and through a second conductive path for passing a scaled portion of the current and a scaled bias current. An output circuit is responsive to a generated voltage in the second conductive path and the bias current for producing a measure of the sensed current. The second conductive path includes a voltage divider with the generated voltage taken at the common node. The output circuit includes a third field effect transistor with the generated voltage applied across the third field effect transistor and with the second and third field effect transistors having the same gate voltage applied thereto for equal currents through the transistors.

Abstract: A method and apparatus for providing electrical output current. The method includes providing a supply current, providing a first and second voltage input signal for controlling output current and generating an output current based on a differential voltage measured between the first and second input voltage signals including increasing the supply current as the output current increase. The apparatus for providing electrical current includes biasing circuitry providing a biasing current ICC and input circuitry including a first and second voltage input. The input circuitry is operable to receive the biasing current ICC and to divide the biasing current ICC based on the differential voltage measured between the first and second voltage inputs producing first and second biasing currents. A pair of translinear circuits is included that are operable to receive the first and second biasing currents and responsive thereto produce a first and second output current.

Abstract: An IR transceiver module includes a lead frame, a sensor, an emitter, and a body encapsulating the sensor and emitter, where the body has an integrally formed lens aligned with both the sensor and with the emitter. The sensor is supported proximate to a support surface of the lead frame and has a sensing area which is generally parallel to the support surface. The emitter is supported proximate to the sensor and within a vertical projection of the sensing area, i.e. it is vertically aligned with the sensor. In embodiments of the invention, a recess is formed into the sensing surface of the sensor that is provided with a reflective material to form a reflective cup for the emitter. In other embodiments, a transceiver is also supported proximate to the lead frame and is electrically coupled to both the sensor and the emitter. By providing a module having both the emitter and sensor aligned with a single lens, a very small form factor can be achieved.

Abstract: A bandgap voltage reference includes a series connection of a proportional-to-absolute-temperature (PTAT) voltage drop resistor with a V.sub.BE voltage drop transistor, such that a bandgap voltage V.sub.REF =V.sub.PTAT +V.sub.BE can be developed across the series connection. The bandgap voltage reference further includes a PTAT current generator having a pair of bipolar transistors which derive their base currents from a base current node between the PTAT voltage drop resistor and the V.sub.BE voltage drop transistor. The PTAT current developed by the PTAT current generator is compensated to counteract the effect of the base currents flowing through the PTAT voltage drop resistor.