Abstract: A receiver circuit for a sensor includes a photosensitive input circuit and a logarithmic-signal circuit including a PN junction coupled to a pulse voltage node. The pulse voltage node may be coupled to the P-type terminal of the PN junction and an output of the photosensitive input circuit. In some examples, the receiver circuit also may include a linear-signal circuit and/or a square-root-signal circuit.

Abstract: A receiver circuit for a sensor includes a photosensitive input circuit and a logarithmic-signal circuit including a PN junction coupled to a pulse voltage node. The pulse voltage node may be coupled to the P-type terminal of the PN junction and an output of the photosensitive input circuit. In some examples, the receiver circuit also may include a linear-signal circuit and/or a square-root-signal circuit.

Abstract: An apparatus for reducing crosstalk between cathodes of detector diodes of an imager detector array includes a capacitor and voltage switch coupled into a detector bias network to virtually isolate a detector diode from a common cathode power plane while simultaneously ‘powering’ the diode for image acquisition, e.g., photo current detection. A method includes a timing sequence wherein during non-acquisition time intervals, the capacitor is charged through the voltage switch by turning the switch on to allow charge to flow into the capacitor from a common supply plane. The method further includes disconnecting the capacitor before an acquisition timer interval such that during the acquisition time interval, the current through the detector diode, caused by incident flux, comes from the capacitor and not from the common cathode power plane.

Abstract: An illustrative example embodiment of a method is for controlling a switch. The switch is used to charge a capacitor that provides an output voltage. The switch has an inductor on an input side between a power source and the switch. The method includes: initiating a switching cycle including turning on the switch, sensing a voltage representing current through the inductor, using a reference voltage as a basis for turning off the switch during the switching cycle when the sensed voltage exceeds the reference voltage, and setting an initial value of the reference voltage at a beginning of the switching cycle based on at least one feature of an activation of the switch during at least one previous switching cycle.

Abstract: An illustrative example embodiment of a method is for controlling a switch. The switch is used to charge a capacitor that provides an output voltage. The switch has an inductor on an input side between a power source and the switch. The method includes: initiating a switching cycle including turning on the switch, sensing a voltage representing current through the inductor, using a reference voltage as a basis for turning off the switch during the switching cycle when the sensed voltage exceeds the reference voltage, and setting an initial value of the reference voltage at a beginning of the switching cycle based on at least one feature of an activation of the switch during at least one previous switching cycle.

Abstract: A gate-driver device for operating a field-effect-transistor (FET) includes a pull-down-block and a pull-up-block resistant to or protected from short circuits of the gate drive signal output by the device. The pull-down-block is operable to drive a gate of a FET to a low-voltage. The pull-up-block includes a resistive-pull-up operable to an ON-state and an OFF-state to switchably couple the gate to the high-voltage via an upper-resistive-element, and a current-pull-up arranged in parallel with the resistive-pull-up. The current-pull-up is operable to an ON-state and an OFF-state to control a current-source applied to the gate. When the pull-up-block drives the gate to the high-voltage, the resistive-pull-up and the current-pull-up operates from the OFF-state to the ON-state. A turn-on-interval after the resistive-pull-up operates from the OFF-state to the ON-state the resistive-pull-up operates to the OFF-state while the current-pull-up is maintained in the ON-state.