Design of nonlinear analogue circuits using switched-current technique

Nonlinear sampled-data signal processing is a new and relatively unexplored application area for switched-current (SI) techniques which have been successfully applied to conventional linear filter design. This paper proposes a systematic approach to designing nonlinear analogue circuits using switched-current techniques. The proposed design methodology is general, simple, straightforward and effective. The proposed switched-current circuits present merits of simple circuit configuration, low voltage and low fabrication cost, compared to the voltage-domain counterparts. This paper demonstrates the potential use of switched-current techniques for general sampled-data signal processing using standard digital MOS process technology.