Patent ID: 7176816

Claim:
A circuit configuration for converting analog signals to digital signals, composing: a multiplexer having a plurality of analog signal inputs, an address input that is several bits wide and an output, the multiplexer being configured to connect one of the analog signal inputs to the output when an address assigned to the respective analog signal input is applied to the address input; an analog/digital converter having an input connected to the output of the multiplexer to digitize the respective analog signal emitted at the output of the multiplexer; and at least one test signal source configured to supply a test signal to a subset of the analog signal inputs of the multiplexer, wherein to the analog signal inputs of the subset, in each case an address comprised of bits is assigned, of whose bits one has a first binary value and all the others have a second binary value that is different from the first binary value, and wherein only one address bit per signal input is set.