A capacitance measurement circuit includes a current source, a switch, and a comparator. The current source is coupled to drive a current through a circuit node. The switch is coupled to the circuit node to switch the current into a device under test (“DUT”) capacitor. The comparator includes first...http://www.google.fr/patents/US7884621?utm_source=gb-gplus-shareBrevet US7884621 - Successive approximate capacitance measurement circuit
