Sensor circuit
AssigneeInfineon Technologies AG
InventorsDan Ioan Dumitru STOICA, Ioan-Alexandru NICA
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Abstract
The present disclosure relates to a sensor circuit including an analog chopper circuit configured to shift an analog input signal from an original frequency to a chopping frequency to generate a chopped analog signal, a ΣΔ-modulator coupled to an output of the analog chopper circuit and configured to digitize the chopped analog signal at a sampling frequency to generate a chopped digital signal, and a digital chopper circuit coupled to an output of the ΣΔ-modulator and configured to demodulate the chopped digital signal to generate a demodulated chopped digital signal having a signal component at the original frequency.
Claims19
A sensor circuit, comprising:
- an analog chopper circuit configured to shift an analog input signal from an original frequency to a chopping frequency to generate a chopped analog signal;
- a sigma-delta (CA)-modulator coupled to an output of the analog chopper circuit and configured to digitize the chopped analog signal at a sampling frequency to generate a chopped digital signal;
- and
- a digital chopper circuit coupled to an output of the ΣΔ-modulator and configured to demodulate the chopped digital signal to generate a demodulated chopped digital signal having a signal component at the original frequency.
Dependencies are inferred from the claim text.