INTEGRATOR-SLEW RATE AND BANDWIDTH ENHANCEMENT IN RESET MODE

摘要

One way to sense a capacitance is to convert it to charge and measure the charge quantity. Charge and capacitance are related by Q=CV where Q=charge, C=capacitance and V=voltage. The G3, G4 and G5 capacitance sense solutions convert the capacitance into charge by modulating the voltage across it and integrating the resulting current. On G4 this used an integration capacitor with two capacitors in feedback where one capacitor is always integrating while the second can be reset in parallel (see CD10109).