Linearization circuit and method for linearizing a measurement signal

A linearization circuit configured to linearize a measurement signal (Ud), the linearization circuit comprising:

• an input configured to receive the measurement signal (Ud) and an output configured to provide a linearized output signal;
• a reference circuit component having a non-linear dependence on current or voltage, wherein a voltage across the reference circuit component, or a voltage derived from a current flowing through the reference circuit component, forms a reference signal (Uc) or an alternating component of a reference signal (Uc);
• a charging and discharging controller configured to control alternating charging and discharging of the reference circuit component, wherein the charging and discharging are controlled so that the reference signal (Uc) has a substantially periodic time dependence;
• and
• a comparator circuit having a first comparator input, a second comparator input, and a comparator output,
• wherein, the comparator circuit is configured to generate, and to provide to the comparator output, a square-wave signal (Ua), when the reference signal (Uc) is provided to the first comparator input and the measurement signal (Ud) is provided to the second comparator input, the square-wave signal (Ua) being generated based on a reference time during a charge-discharge cycle and a result of a comparison of the reference signal (Uc) with the measurement signal (Ud), such that the square-wave signal (Ua) represents the linearized output signal.