An Analog Maximum, Median, and Minimum Circuit in Current-mode

  • Sangjeen, Noawarat (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang) ;
  • Laikitmongkol, Sukum (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang) ;
  • Riewruja, Vanchai (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang) ;
  • Petchmaneelumka, Wandee (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang) ;
  • Julsereewong, Prasit (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang)
  • Published : 2003.10.22

Abstract

In this paper, the CMOS integrated circuit technique for implementing current-mode maximum and minimum operations scheme is described. The maximum and minimum operations are incorporated into the same scheme with parallel processing. Using this scheme as the basic unit, an analog three-input maximum, median, and minimum circuit is designed. The performance of the proposed circuit shows a very sharp transfer characteristic and high accuracy. The proposed circuit achieves a high-speed operation, which is suitable for real-time systems. The PSPICE simulation results demonstrating the characteristic of the proposed circuit are included.

Keywords