Title :
Current-mode piecewise-linear function generators
Author :
Delgado-Restituto, Manuel ; Ceballos-Cáceres, Joaquin ; Rodríguez-Vázquez, Angel
Author_Institution :
Centro Nacional de Microelectron., Seville, Spain
Abstract :
We present a systematic design technique for current-mode piecewise-linear (PWL) function generators. It uses two building blocks: a high-resolution current rectifier, and a programmable current amplifier. We show how to arrange these blocks to obtain basic non-linearities from which generic characteristics are built through aggregations. Measurements from a 1.0 μm CMOS prototype chip show 10 pA resolution in the rectification operation and 0.6% non-linearity errors in the programmable scaling operation for 2 μA input current range
Keywords :
CMOS analogue integrated circuits; function generators; piecewise-linear techniques; rectifying circuits; 1.0 micron; CMOS chip; current rectifier; current-mode piecewise-linear function generator; design; nonlinearity; programmable current amplifier; CMOS technology; Circuit synthesis; Current measurement; Piecewise linear approximation; Piecewise linear techniques; Prototypes; Rectifiers; Semiconductor device measurement; Signal generators; Signal resolution;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.539986
