Precision current-source arrangement

Details Precision current-source arrangement Precision current-source arrangement

G - Physics

05

F

354/97

G05F 1/56 (2006.01) G05F 3/26 (2006.01) H03M 1/00 (2006.01) H03M 1/68 (2006.01) H03M 1/74 (2006.01)

Patent

CA 1214880

ABSTRACT: Precision current-source arrangement. 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 the associated control circuit of the block of the control circuits (50). The relevant control currents (i1, i2, i3 and i4) is corrected in such way that the ripple component substantially eliminates.

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