System and method for voltage sensing for compensation in an electronic display via analog front end

A method, comprising:

• decoupling pixel circuitry of display circuitry of an electronic device from a data line of the display circuitry;
• pre-charging a parasitic capacitor that is electrically coupled to the data line;
• discharging voltage from the parasitic capacitor, by coupling the pixel circuitry with the data line;
• sensing a diode voltage, by buffering the discharged voltage, via a sensing amplifier;
• and
• performing an analog-to-digital conversion on the buffered discharged voltage.

An electronic device, comprising:

• conversion circuitry configured to:
• receive a sensing output comprising:
• a diode voltage of one or more pixels, a driving current of the one or more pixels, or both, depending on a current operation of sensing circuitry of the electronic device;
• and
• convert the sensing output from an analog domain to a digital domain using a time domain conversion (TDC) configuration, by:
• electrically decoupling a parasitic capacitor of the sensing circuitry from a sensing amplifier of the sensing circuitry;
• applying a current source for leakage compensation, calibration, and dual slope analog-to-digital-conversion to the sensing amplifier;
• comparing a voltage of multiple samples of the sensing amplifier with a reference voltage;
• counting a time between an initial voltage and the reference voltage, by the voltage of the multiple samples of the sensing amplifier;
• wherein the time is used by the electronic device, to estimate a multi-sample average voltage;
• and
• outputting the multi-sample average voltage in a digital domain.