A current-distribution circuit (1) supplies a plurality of substantially equal currents (i1, i2, i3 and i4) to a permutation circuit (13), which transfers these currents to outputs (18, 19, 20 and 21) in accordance with a cyclic permutation. The currents in these outputs exhibit a ripple caused by the inequality of the currents (i1, i2, i3 and i4). A detection circuit (30) detects the ripple component of the currents (i1, i2, i3 and i4) and applies this ripple component to a associated control circuit of a block of control circuits (50). The relevant control circuit supplies a control current for correcting the relevant current (i1, i2, i3 or i4) in such way that the ripple component is substantially eliminated.
展开▼
