Title :
Versatile current-mode loser-take-all circuits for analog decoders
Author :
Omole, Ibiyemi A. ; Maundy, Brent J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada
Abstract :
A new concept for finding the minimum between two variables is described in this paper. Two types of hardware implementation of the novel concept are presented in CMOS. The ease of adding and/or subtracting currents as compared to voltage summation is fully utilized to realize versatile current-mode minimum seeking circuits that could find application in analog decoders. The approach presented also has the potential of being extended in a highly modular architecture to find the minimum of an array of inputs in current-mode. The overall circuitry uses single and double output current mirrors as internal processing units connected between a 3.3 V power supply and could resolve a current difference of at least 1.5 μA
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; current mirrors; current-mode circuits; decoding; 3.3 V; CMOS; analog decoders; current-mode loser-take-all circuits; current-mode minimum seeking circuits; double output current mirrors; hardware implementation; internal processing units; modular architecture; single output current mirrors; voltage summation; Bandwidth; Circuits; Computer architecture; Computer networks; Decoding; Dynamic range; Hardware; Mirrors; Vector quantization; Voltage;
Conference_Titel :
Circuits and Systems, 2001. MWSCAS 2001. Proceedings of the 44th IEEE 2001 Midwest Symposium on
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-7150-X
DOI :
10.1109/MWSCAS.2001.986295
