Analogue CMOS, low-voltage, current-mode implementation of digital logic gates

A latest approach for implementing basic logic functions using analogue current-mode techniques is presented. To integrate the digital and analogue parts on to one chip, high performance analogue CMOS circuits are required and a large number of mixed analogue/digital VLSI integrated circuits realized in state-of-the-art digital CMOS technologies are available. The emergence of integrated circuits (IC) incorporating mixed analogue and digital functions on a single chip has led to an advanced level of analogue design. Analogue-based realization of digital logic circuits could result in avoiding the traditional problems of fan-in and fan-out, inherent in digital implementations, less complexity, low-voltage as well as higher speed of operation.