Circuit for comparing two electrical quantities

A circuit arrangement for comparing two electrical quantities, comprising:

• a first current source that supplies a first quadrature-axis current component that flows through a first inverter unit, the first current source being connected only to a source terminal of the first inverter unit;
• a reference current source that supplies a second quadrature-axis current component that flows through a second inverter unit, the reference current source being connected only to a source terminal of the second inverter unit, wherein the first inverter unit and the second inverter unit are co-coupled an output of the first inverter unit is connected to an input of the second inverter unit, an output of the second inverter unit is connected to an input of the first inverter unit, and an output signal of the first inverter unit is indicative of a comparison result of the first quadrature-axis current component to the second quadrature-axis current component;
• and
• a single reset unit for providing exclusive compensation for a difference in potential between an output potential of the first inverter unit and an output potential of the second inverter unit, a control signal connected to the reset unit being used exclusively for control of the reset unit.