Abstract: In various examples there is a capacitance measurement circuit for measuring capacitance of an electrode. The circuit comprises a charging/discharging circuit part which charges the electrode or discharges the electrode, and a counter which measures a charging measurement being a time taken by the charging/discharging circuit part to charge the electrode between two charging thresholds, and which measures a discharging measurement being a time taken by the charging/discharging circuit part to discharge the electrode between two discharging thresholds. The circuit has a controller configured to control the charging/discharging circuit part and the counter such that a plurality of discharging measurements are obtained and a plurality of charging measurements are obtained. The circuit has an averaging logic which computes the measured capacitance in relation to an average of the measurements.

Abstract: In various examples there is a capacitance measurement circuit for measuring capacitance of an electrode. The circuit comprises a charging/discharging circuit part which charges the electrode or discharges the electrode, and a counter which measures a charging measurement being a time taken by the charging/discharging circuit part to charge the electrode between two charging thresholds, and which measures a discharging measurement being a time taken by the charging/discharging circuit part to discharge the electrode between two discharging thresholds. The circuit has a controller configured to control the charging/discharging circuit part and the counter such that a plurality of discharging measurements are obtained and a plurality of charging measurements are obtained. The circuit has an averaging logic which computes the measured capacitance in relation to an average of the measurements.

Abstract: A method for compensating for gain changes of an N-level pulse amplitude modulation (PAM-N) modulated signal. The method comprises comparing the PAM-N modulated signal to N?1 configurable thresholds, wherein the input PAM-N modulated signal is also equalized and the N?1 configurable thresholds are N?1 different voltage levels; tracking gain changes in the input PAM-N modulated signal by comparing the input PAM-N modulated signal to a compensation threshold; and adjusting a level of the at least one of the N?1 configurable thresholds of the N?1 comparators based on an output of the compensation comparator, thereby offsetting a crossing point of the at least one comparator respective of the at least one of the N?1 configurable thresholds to compensate for gain changes in the input PAM-N modulated signal.

Abstract: A method for compensating for gain changes of an N-level pulse amplitude modulation (PAM-N) modulated signal. The method comprises comparing the PAM-N modulated signal to N?1 configurable thresholds, wherein the input PAM-N modulated signal is also equalized and the N?1 configurable thresholds are N?1 different voltage levels; tracking gain changes in the input PAM-N modulated signal by comparing the input PAM-N modulated signal to a compensation threshold; and adjusting a level of the at least one of the N?1 configurable thresholds of the N?1 comparators based on an output of the compensation comparator, thereby offsetting a crossing point of the at least one comparator respective of the at least one of the N?1 configurable thresholds to compensate for gain changes in the input PAM-N modulated signal.