A device estimates time errors in a time interleaved A/D converter system. To this end an output signal (y1, y2, . . . , yM) is fed to a correction device (5), that is provided to correct the signals with an estimated time error and to produce M signals (z1, z2, . . . , zM). These signals are used in an estimation algorithm device to estimate the time error and the time estimated time errors are then fed to the correction device (5).