Capacitance-to-digital converter and method for providing a digital output signal

A method for providing a digital output signal, comprising:

• providing an analog sensor signal by an input capacitor;
• generating a digital sensor signal by a converter as a function of the analog sensor signal;
• and
• providing a digital output signal by a calibration unit that is coupled to the converter,
• wherein the converter comprises an interface circuit that is coupled on its input side to the capacitor arrangement and comprises a first integrator having a first amplifier as well as a first and a second integrating capacitor,
• wherein the interface circuit comprises a first and a second chopping unit, such that the first chopping unit couples a first and a second input of the first amplifier to a first terminal of the first integrating capacitor, and the second chopping unit couples the first and the second input of the first amplifier to a first terminal of the second integrating capacitor.

A capacitance-to-digital converter, comprising:

• a capacitor arrangement comprising an input capacitor;
• a converter that is coupled on its input side to the capacitor arrangement;
• and
• a calibration unit that is coupled on its input side to the converter,
• wherein the converter comprises an interface circuit that is coupled on its input side to the capacitor arrangement and comprises a first integrator having a first amplifier as well as a first and a second integrating capacitor,
• wherein the interface circuit comprises an input chopping unit that couples a first and a second input of the first amplifier to the capacitor arrangement, to a first terminal of the first integrating capacitor and to a first terminal of the second integrating capacitor, and
• wherein the capacitor arrangement is directly connected to the first terminal of the first integrating capacitor and to the first terminal of the second integrating capacitor.