The invention relates to a compensation circuit (1 6) to compensate
nonlinear distortions of an A/D converter comprising a signal input and a
compensation system. In order to avoid the high costs related to the
complex analog design of the A/D converter and/or the high energy
consumption in this converter and compensation system, it is proposed
that a compensation circuit be used that is composed of digital circuit
elements that are connected following the A/D converter and which has a
nonlinearly distorted output signal of the A/D converter supplied to it
to compensate the nonlinear distortion. Adaptive coefficients are
preferably employed here for the compensation.