87614 20200716101545.0 doi 10.3390/s19235173 sideral 115825 ART-2019-115825 eng (orcid)0000-0002-8617-5703 Pérez-Bailón, Jorge Universidad de Zaragoza A CMOS low pass filter for soc lock-in-based measurement devices 2019 Access copy available to the general public Unrestricted This paper presents a fully integrated Gm–C low pass ¿lter (LPF) based on a current ¿steering Gm reduction-tuning technique, specifically designed to operate as the output stage of a SoC lock-in amplifier. To validate this proposal, a first-order and a second-order single-ended topology were integrated into a 1.8 V to 0.18 µm CMOS (Complementary Metal-Oxide-Semiconductor) process, showing experimentally a tuneable cutoff frequency that spanned five orders of magnitude, from tens of mHz to kHz, with a constant current consumption (below 3 µA/pole), compact size (<0.0140 mm2 /pole), and a dynamic range better than 70 dB. Compared to state-of-the-art solutions, the proposed approach exhibited very competitive performances while simultaneously fully satisfying the demanding requirements of on-chip portable measurement systems in terms of highly efficient area and power. This is of special relevance, taking into account the current trend towards multichannel instruments to process sensor arrays, as the total area and power consumption will be proportional to the number of channels. info:eu-repo/grantAgreement/ES/MINECO-FEDER/TEC2015-65750-R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.275 2019 CHEMISTRY, ANALYTICAL 22 / 86 = 0.256 2019 Q2 T1 INSTRUMENTS & INSTRUMENTATION 15 / 64 = 0.234 2019 Q1 T1 ENGINEERING, ELECTRICAL & ELECTRONIC 77 / 266 = 0.289 2019 Q2 T1 0.653 2019 Instrumentation 2019 Q1 Atomic and Molecular Physics, and Optics 2019 Q2 Medicine (miscellaneous) 2019 Q2 Information Systems 2019 Q2 Analytical Chemistry 2019 Q2 Electrical and Electronic Engineering 2019 Q2 Biochemistry 2019 Q3 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0003-2361-1077 Calvo, Belén Universidad de Zaragoza (orcid)0000-0002-5380-3013 Medrano, Nicolás Universidad de Zaragoza 5008 250 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Electrónica 19, 23 (2019), 5173 [18 pp.] Sensors Sensors (Switzerland) 1424-8220 7389346 http://zaguan.unizar.es/record/87614/files/texto_completo.pdf Versión publicada 107553 http://zaguan.unizar.es/record/87614/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:87614 articulos driver 2020-07-16-09:43:08 ARTICLE