Analog/digital or digital/analog converter having internal reference voltage selection

An analog/digital or digital/analog converter, comprising:

• a conversion device converting an analog or digital input signal into a digital or analog output signal with respect to a particular reference voltage, said conversion device having:
• a main network containing a plurality of weighted reference elements and a comparator connected to an output of said main network;
• a correction network containing further weighted reference elements coupled to said main network for correcting both offset errors and linearity errors, said reference elements in said main network having associated correction values for actuating said correction network, said correction network having a particular associated zero point at which a correction network controller applies a first reference voltage to particular reference elements in said correction network and applies a second reference voltage to other reference elements in said correction network;
• and
• said particular reference elements in said correction network being split into a corresponding offset reference element for correcting offset errors and into a corresponding linearity reference element for correcting linearity errors, and said all other reference elements in said correction network not being split into reference elements used exclusively for correcting offset errors and reference elements used exclusively for correcting linearity errors.