Title :
Active spatial filtering for A/D converters
Author :
Leuciuc, Adrian ; Carnu, Ovidiu
Author_Institution :
Dept. of Electr. & Comput. Eng., State Univ. of New York, Stony Brook, NY, USA
Abstract :
A technique of offset averaging for reducing INL and DNL in flash and folding A/D converters is presented in this paper. The proposed method uses second-order active resistive networks implementing Gaussian-like spatial filters. Compared to previously reported methods employing passive resistive grids, a better offset reduction is achieved without sacrificing the signal gain. Both behavioral and transistor-level simulation results confirmed the performance of the proposed technique
Keywords :
MOS integrated circuits; active filters; analogue-digital conversion; spatial filters; A/D converters; DNL reduction; Gaussian-like spatial filters; INL reduction; active resistive networks; active spatial filtering; behavioral simulation; flash ADC; folding ADC; offset averaging; offset reduction; second-order resistive networks; transistor-level simulation; Active filters; Circuits; Filtering; Gaussian processes; IIR filters; Low pass filters; Preamplifiers; Resistors; Spatial filters; Voltage;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1011007
