Abstract: The amplifier load current cancellation in a current integrator comprises applying an input current to an operational transconductance amplifier provided with an integration capacitor for current integration, leading an output current of the operational transconductance amplifier through a sensing resistor, thus producing a voltage drop over the sensing resistor, generating a cancellation current dependent on the voltage drop over the sensing resistor, and injecting the cancellation current to the output current, before or after the output current passes the sensing resistor, thus eliminating a dependence of the output current on the input current.

Abstract: A method is proposed for controlling a display parameter of a mobile device. The mobile device comprises a display and a first imaging unit. The method comprising the step of positioning and orienting the display with respect to a reference plane located at a reference position, such that the first imaging unit faces towards the reference plane. Then a first image is generated by means of the first imaging unit, wherein the first image depends on ambient light incident on the first imaging unit and emitted from at least one ambient light source. A first light level is calculated from the first image, wherein the first light level is indicative of a first fraction of the incident ambient light which illuminates the reference plane by means of specular reflection of the incident ambient light at the display. Finally, the display parameter is adjusted depending on the first light level.

Abstract: An optical sensor arrangement comprises a photodiode (11) and an analog-to-digital converter (12). The analog-to-digital converter (12) comprises an integrator (13) having an integrator input (15) coupled to the photodiode (11), a comparator (14) having a first input coupled to an output of the integrator (13) and a digital-to-analog converter (39) coupled to a control terminal of the comparator (14).

Abstract: In an embodiment a low-pass filter arrangement has an input terminal for receiving an input voltage, a first voltage source coupled to the input terminal, a serial connection comprising a first and a second filter diode, the serial connection being coupled to the first voltage source, wherein a connection point between the first and the second filter diode is coupled to an output terminal of the filter arrangement, and a first filter capacitor coupled between the output terminal and a filter reference potential terminal. Therein the first voltage source is adapted to provide a first adjustable forward voltage whereby the first and the second filter diodes are both biased in a forward direction.

Abstract: The package comprises a carrier, an electronic device arranged on the carrier, a shield arranged on the electronic device on a side facing away from the carrier, and an absorber film comprising nanomaterial applied on or above the shield.

Abstract: A method for light-to-frequency conversion comprises the steps of illuminating a photodiode by a light source, generating a photocurrent by means of the photodiode, converting the photocurrent into a digital comparator output signal depending on a first clock signal, generating a first count comprising an integer number of counts, where the generation of the first count depends on the first clock signal, generating a second count which relates to the time interval between at least two counts of the first count, and determining the frequency of a repeating pattern in the intensity of electromagnetic radiation emitted by the light source and detected by the photodiode from the first count and the second count. Furthermore, a light-to-frequency converter arrangement is provided.

Abstract: The semiconductor device comprises a substrate of semiconductor material having a main surface, an integrated circuit in the substrate, a photodetector element or array of photodetector elements arranged at or above the main surface, and at least one nanomaterial film arranged above the main surface. At least part of the nanomaterial film has a scintillating property. The method of production includes the use of a solvent to apply the nanomaterial film, in particular by inject printing, by silk-screen printing, by spin coating or by spray coating.

Abstract: An integrated temperature sensor comprises a chip package enclosing an integrated circuit and an ultrasonic transceiver which is integrated on top of the integrated circuit. The ultrasonic transceiver comprises a transmitting element which is arranged for emitting ultrasound waves, and a receiving element which is arranged for receiving ultrasound waves. The chip package comprises at least one barrier arranged at a defined position in the chip package. The barrier is designed to at least partly reflect ultrasound waves emitted by the transmitting element towards the receiving element. The integrated circuit comprises an actuator element to actuate the transmitting element to emit ultrasound waves according to a first signal s(t), and a converter element to convert an ultrasound wave, received by the receiving element, into a second signal y(t).

Abstract: In an embodiment an analog-to-digital converter circuit has an input for receiving at least a first analog signal level, a ramp generator adapted to provide a ramp signal having a constant and adjustable starting level which splits into a first section which is rising and a second section which is falling concurrently to the first section's rising, wherein the starting level lies within an input range of the analog-to-digital converter circuit, a comparison unit which is coupled by its first input to the input of the analog-to-digital converter circuit and is coupled by its second input in a switchable manner to the ramp generator, a counter which is coupled to a control unit, and the control unit which is coupled to an output of the comparison unit, wherein the control unit is prepared to enable the counter depending on a comparison of the ramp signal with the first analog signal level and to determine a digital value as a function of a count of the counter reached at an intersection point of the ramp signal

Abstract: A measurement circuitry (MC) for evaluating a resistance of a resistive gas sensor (GS) comprises a first current path (P1), wherein a first logarithmic compression circuit (LC1) is arranged in the first current path (P1). A reference resistor (Rreference) and a second logarithmic compression circuit (LC2) is arranged in a second current path (P2) of the measurement circuitry (MC). A voltage generator (VG) provides a fixed voltage excitation for the resistive gas sensor (GS) and the reference resistor (Rreference). A first current (I1) received from the resistive gas sensor (GS) flows from the gas sensor (GS) via the first current path (P1) into the first logarithmic compression circuit (LC1). An evaluation circuit (EC) determines the resistance (Rs) of the resistive gas sensor (GS) in dependence on a first and second output signal (Ve1, Ve2) of the first and the second logarithmic compression circuit (LC1, LC2).

Abstract: An amplifier arrangement comprises a sensor input and a first and a second amplifier. The first amplifier has a first amplifier output and a first input connected to a first reference potential terminal and a second input connected to the sensor input in a direct fashion and to the first amplifier output via a feedback path having a switched integration capacitor that is charged by the feedback path during a first switching phase and discharged during a second switching phase. The second amplifier has a second amplifier output, a first input connected to a second reference potential terminal and a second input. A first feedback capacitor is connected in-between two pairs of feedback switches. A second feedback capacitor is connected between the second amplifier output and the second input of the second amplifier. An impedance element is coupled between the second amplifier output and the sensor input.

Abstract: An optical sensor arrangement comprises a photodiode and a converter arrangement including an integration amplifier, a comparator amplifier, an integration capacitor and a comparator capacitor. An offset of the integration amplifier is corrected in that the integrator output signal is compared with a high and a low comparison voltage to repetitively adjust an offset trim value. The use of two comparison thresholds creates noise immunity.

Abstract: An interface circuit comprises a signal path including a front-end charge amplifier coupling an input of the interface circuit to an output of the interface circuit, and a DC control loop separate from the signal path. In some implementations, the interface circuit is part of a MEMS sensor that includes a MEMS transducer having an output coupled to the input of the interface circuit. The interface circuit can, in some cases, allow faster settling of the circuit to its steady-state operating point.

Abstract: The assembly comprises a semiconductor device with an active-pixel array, a readout circuit chip or plurality of readout circuit chips mounted outside the active-pixel array, the readout circuit chip or plurality of readout circuit chips being configured to read out voltages or currents provided by the active-pixel array, and electric connections between the active-pixel array and the readout circuit chip or plurality of readout circuit chips.

Abstract: A noise cancellation headphone comprises a speaker, a front plate for carrying the speaker, a microphone arranged on or in the front plate, and a front vent opening arranged within the front plate and in close proximity to the microphone. The microphone is usable as a feedback microphone for active noise cancellation.

Abstract: An integrated sensor module includes a UV radiation source operable to emit UV radiation onto a sample, and a sensor including spectrally sensitive UV channels disposed so as receive UV radiation from the sample. Each of the UV channels includes a respective sensing device and a respective UV interference filter disposed over a UV radiation sensitive portion of the respective sensing device. The respective UV interference filter for each particular one of the channels has transmission characteristics that are spectrally responsive to a spectral signature of a respective chemical substance.

Abstract: The microphone comprises a housing (1, 2), which has an inner volume (12) filled with a gas, an opening (10) of the housing, an acoustic sensor (3) arranged in the housing, a diaphragm (13) of the acoustic sensor located above the opening, and a heater (14) in the inner volume. The acoustic sensor may especially comprise a microelectromechanical system. The gas is heated from inside the inner volume to increase the pressure and generate a corresponding signal of the acoustic sensor (3). This signal can be used for self-calibration of the sensitivity or for self-diagnostics to check the function of the microphone.

Abstract: The current disclosure describes a stereo imaging system that is configured to use Time-of-Flight (“Tof”) techniques to aid in stereoscopic image processing. One process disclosed uses ToF to aid in identifying the same elements (e.g., pixel clusters) in stereo image pairs by narrowing down search areas for matching. Another process uses ToF to aid in identifying the same elements in stereo image pairs where there a small amount texture making it difficult to find a match.

Abstract: A method for light-to-frequency conversion comprises generating a photocurrent by means of a photodiode and converting the photocurrent into a digital comparator output signal in a charge balancing operation depending on a first clock signal. From the digital comparator output signal an asynchronous count is determined and comprises an integer number of counts depending on the first clock signal. From the digital comparator output signal a fractional time count is determined and depends on a second clock signal. Finally, from the asynchronous count and from the fractional time count a digital output signal is calculated which is indicative of the photocurrent generated by the photodiode. The method may be carried out by an exemplary light-to-frequency converter equipped with a photodiode.

Abstract: A charge pump circuit comprises a series circuit of a number N of stage circuits. A stage circuit comprises a converter circuit, a stage output, a stage input coupled via the converter circuit to the stage output, a first clock input and a second clock input coupled to the converter circuit, a control input and an activation transistor having a control terminal coupled to the control input and a first terminal coupled to the stage output.