A SIGNAL DEPENDENT CLOCK FEEDTHROUGH CANCELLATION TECHNIQUE FOR SWITCHED-CURRENT CIRCUITS

In this paper, a signal dependent clock feedthrough cancellation techn ique for SI is proposed. It is difficult to cancel signal-dependent cl ock feedthrough in conventional SI circuits because nonlinear I-V and V-I converters are used. However, the proposed technique uses linear r ather than nonlinear I-V and V-I converters. Thus the signal dependent clock feedthrough can be cancelled by the proposed technique. Finally , SPICE simulations are performed to verify the performance of the pro posed clock feedthrough reduction circuit. The proposed circuit has sm aller clock feedthrough than conventional circuits even if the input c urrent is large. (C) 1998 Scripta Technica.