Title :
Measuring and experimental results of current mode ΣΔ modulators with switched transconductance
Author :
Suszynski, Robert
Author_Institution :
Fac. of Electron., Tech. Univ. of Koszalin, Koszalin, Poland
Abstract :
This paper presents measuring and experimental results of A/D converters with current mode ΣΔ modulators. The ΣΔ modulator structures are composed of current mode blocks with transconductance amplifiers and their parasitic input capacitances. ΣΔ modulator structures were designed and simulated by using the VLSISPICE COMPASS DESIGN program and finally designed by using the UNCLE program and then manufactured via Eurochip service center in a 0.7 μm ES2 digital process to verify the proposed concept. Three different ΣΔ structures: first-order, second-order and multistage third-order were measured and results are given in the paper
Keywords :
CMOS integrated circuits; circuit CAD; circuit simulation; current-mode circuits; integrated circuit design; modulators; sigma-delta modulation; 0.7 micron; A/D converters; ES2 digital process; Eurochip service center; UNCLE program; VLSISPICE COMPASS DESIGN program; current mode ΣΔ modulators; first-order type; multistage third-order typr; parasitic input capacitances; second-order type; sigma-delta modulator ADC; switched transconductance; transconductance amplifiers; Circuit testing; Clocks; Current measurement; Delta modulation; Digital modulation; Feedback loop; Integrated circuit measurements; Manufacturing processes; Pulse modulation; Transconductance;
Conference_Titel :
Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on
Conference_Location :
Pafos
Print_ISBN :
0-7803-5682-9
DOI :
10.1109/ICECS.1999.814458
