Abstract: A digital microphone or other sensor assembly includes a transducer and an electrical circuit including a slew-rate controlled output buffer configured to reduce propagation delay and maintain output rise and fall time independent of PVT variation and load capacitance. In some embodiments, the portions of the output buffer are selectably disabled to reduce power consumption without adversely substantially increasing propagation delay.

Abstract: A digital microphone or other sensor assembly includes a transducer and an electrical circuit including a slew-rate controlled output buffer configured to reduce propagation delay and maintain output rise and fall time independent of PVT variation and load capacitance. In some embodiments, the portions of the output buffer are selectably disabled to reduce power consumption without adversely substantially increasing propagation delay.

Abstract: There is described an electronic device, the device comprising (a) a power supply terminal for connecting to a power supply (130, 330), (b) a first circuit (110, 310) coupled to be powered by the power supply, the first circuit (110, 310) being susceptible to power supply noise within a predetermined frequency range, and (c) a second circuit (120, 320) coupled to be powered by the power supply, the second circuit (120, 320) comprising an open-loop capacitive DC-DC converter (323) having a switching frequency outside of the predetermined frequency range. There is also described a system comprising an electronic device and a reader/writer device. Furthermore, there is described a method of manufacturing an electronic device.

Abstract: According to a first aspect of the present disclosure, a power switching circuit is provided, comprising: a bandgap reference circuit configured to receive an input voltage and to generate a reference voltage in response to receiving said input voltage; a supply selection circuit configured to receive at least two supply voltages, to select the highest voltage of said supply voltages and to provide said highest voltage to the bandgap reference circuit. According to a second aspect of the present disclosure, a corresponding method of operating a power switching circuit is conceived.

Abstract: According to a first aspect of the present disclosure, a power switching circuit is provided, comprising: a bandgap reference circuit configured to receive an input voltage and to generate a reference voltage in response to receiving said input voltage; a supply selection circuit configured to receive at least two supply voltages, to select the highest voltage of said supply voltages and to provide said highest voltage to the bandgap reference circuit. According to a second aspect of the present disclosure, a corresponding method of operating a power switching circuit is conceived.

Abstract: There is described an electronic device, the device comprising (a) a power supply terminal for connecting to a power supply (130, 330), (b) a first circuit (110, 310) coupled to be powered by the power supply, the first circuit (110, 310) being susceptible to power supply noise within a predetermined frequency range, and (c) a second circuit (120, 320) coupled to be powered by the power supply, the second circuit (120, 320) comprising an open-loop capacitive DC-DC converter (323) having a switching frequency outside of the predetermined frequency range. There is also described a system comprising an electronic device and a reader/writer device. Furthermore, there is described a method of manufacturing an electronic device.