Reconfigurable low power and low area gate bootsrapping circuit

An analog-to-digital converter (ADC) circuit comprising:

• a sampling circuit, configured to sample an input voltage to the ADC circuit, wherein the sampling circuit includes:
• a switch circuit including a switch input to receive an input voltage, a gate input, and a switch output;
• and
• a gate bootstrapping circuit that provides a boosted clock signal to the gate input of the switch circuit, wherein a boosted voltage of the boosted clock signal tracks the input voltage by a voltage offset, wherein the gate bootstrapping circuit includes a single boost capacitance coupled between a first circuit node and a second circuit node, wherein a high supply voltage is applied to the first circuit node and the input voltage is applied the second circuit node to generate the boosted voltage on the single boost capacitance to provide the boosted clock signal;
• a digital-to-analog, converter (DAC) circuit operatively coupled to the sampling circuit;
• a comparator circuit configured to compare an output voltage of the DAC to a specified threshold voltage during a bit trial of the ADC circuit;
• and
• logic circuitry configured to perform bit trials of the ADC circuit.