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A simple CMOS implementation of a continuous-time analog rank-order N input filter is presented that uses N operational transconductance amplifiers. Rank is digitally programmable for all values from k=1 (min case) to k=n (max case). The implementation is based on a compact transconductor with high transconductance gain and symmetrical output current saturating characteristics. Experimental and simulation results are presented that verify functionality and the high frequency characteristics of the proposed implementation.
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on (Volume:5 )
Date of Conference: 2002