Modular Discrete and CMOS Integrated Implementations of High-Speed Analog Rank-Order Filters

摘要

Modular discrete and integrated implementations of a continuous-time analog rank-order N input filter are presented that uses one operational transconductance amplifier per input. Rank is programmable for all values from k = 1 (min case) to k = N (max case). The implementation is based on transconductance cells with high transconductance gain and symmetrical output current saturating characteristics. Experimental results for both discrete and CMOS integrated implementations are presented that verify functionality and the high-frequency characteristics of the proposed implementations.