Design of nonlinear switched-current circuits using building block approach

This paper studies a family of switched-current and current-mode building blocks for nonlinear sampled-data signal processing and proposes several new switched-current nonlinear circuits which can be designed using the building block approach. The proposed circuits present merits of simple circuit configuration, low voltage and low cost. The development of these circuits has not only expanded the family of the state-of-the-art switched-current circuits but also provided high level macrocells for the design of complex SI signal processing systems.