Conclusions

Abstract

This book describes the design of low-voltage analog integrated filters using current mirrors, one of the most common building blocks in analog and mixed-signal VLSI circuits. Its purpose is to contribute in the existing research area of the design of analog filters using low-voltage current mirrors. In this direction, all the derived filters are constructed by the low-voltage high-swing current mirror, offering the advantages of low-voltage operation, absence of passive resistors and electronic adjustment capability of their frequency characteristics. Several design examples have been described in detail, namely universal biquad filter topologies, complex filters for Bluetooth/ZigBee low-IF receivers, wavelet filters for cardiac signal detection and a current mirror topology with electronically adjustable gain. Experimental results from the fabricated chips have been also presented, exhibiting their utility in modern low-voltage low-power portable devices.