Switched capacitor integrator circuit with reference, offset cancellation and differential to single-ended conversion

A dual integrator system, comprising:

• a first integrator configured to receive a differential Hall sensor signal and a reference voltage, wherein the first integrator comprises a first offset cancellation feedback loop and is further configured to output a first integrator signal based on the differential Hall sensor signal and the reference voltage;
• a second integrator configured to receive the differential Hall sensor signal and the reference voltage, wherein the second integrator comprises a second offset cancellation feedback loop and is further configured to output a second integrator signal based on the differential Hall sensor signal and the reference voltage;
• an output stage;
• and
• a switching network coupled to the first and second integrators and the output stage and configured to alternate which of the first and second integrators is coupled to the output stage.

A circuit, comprising:

• a switched capacitor module configured to receive a positive differential input signal and a negative differential input signal, comprising a switching network, a first sampling capacitor, and a second sampling capacitor;
• an integrator having a positive input coupled to the first sampling capacitor, a negative input coupled to the second sampling capacitor, a positive output, and a negative output;
• a first feedback loop, comprising:
• a first switch coupled between the positive input and the negative output;
• a second switch coupled to the positive input
• a first feedback capacitor coupled between the second switch and the negative output;
• and
• a second feedback loop, comprising:
• a third switch coupled between the negative input and the positive output;
• a fourth switch coupled to the negative input;
• and
• a second feedback capacitor coupled between the fourth switch and the positive output.