Patent ID: 8576106

Claim:
An analog-digital converter, comprising: a plurality of converter units each comprising: a comparator for performing a comparison using an input voltage; one or more capacitor ladders each including a signal line connected with first terminals of a plurality of capacitors and with one input of the comparator, wherein the capacitances of the capacitors are set to provide a conversion redundancy; and a plurality of switches each of which is associated with one of the plurality of capacitors, connected to a second terminal of the respective capacitor with a first or a second reference potential, wherein the input voltage is shifted when switching at least one of the plurality of switches; and a control unit for controlling a number of converter units, wherein the control unit is configured to set switching states of the plurality of switches in a plurality of conversion cycles and to obtain comparison results from each of the comparators in a comparison step subsequent to each setting of the switching states, wherein the comparison results for each conversion cycle are associated with the switching states of at least one of the plurality of switches, and wherein the switching states of the switches are directly controlled by a level of the comparison results for each conversion cycle.