000087614 001__ 87614 000087614 005__ 20200716101545.0 000087614 0247_ $$2doi$$a10.3390/s19235173 000087614 0248_ $$2sideral$$a115825 000087614 037__ $$aART-2019-115825 000087614 041__ $$aeng 000087614 100__ $$0(orcid)0000-0002-8617-5703$$aPérez-Bailón, Jorge$$uUniversidad de Zaragoza 000087614 245__ $$aA CMOS low pass filter for soc lock-in-based measurement devices 000087614 260__ $$c2019 000087614 5060_ $$aAccess copy available to the general public$$fUnrestricted 000087614 5203_ $$aThis 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. 000087614 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/TEC2015-65750-R 000087614 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000087614 590__ $$a3.275$$b2019 000087614 591__ $$aCHEMISTRY, ANALYTICAL$$b22 / 86 = 0.256$$c2019$$dQ2$$eT1 000087614 591__ $$aINSTRUMENTS & INSTRUMENTATION$$b15 / 64 = 0.234$$c2019$$dQ1$$eT1 000087614 591__ $$aENGINEERING, ELECTRICAL & ELECTRONIC$$b77 / 266 = 0.289$$c2019$$dQ2$$eT1 000087614 592__ $$a0.653$$b2019 000087614 593__ $$aInstrumentation$$c2019$$dQ1 000087614 593__ $$aAtomic and Molecular Physics, and Optics$$c2019$$dQ2 000087614 593__ $$aMedicine (miscellaneous)$$c2019$$dQ2 000087614 593__ $$aInformation Systems$$c2019$$dQ2 000087614 593__ $$aAnalytical Chemistry$$c2019$$dQ2 000087614 593__ $$aElectrical and Electronic Engineering$$c2019$$dQ2 000087614 593__ $$aBiochemistry$$c2019$$dQ3 000087614 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000087614 700__ $$0(orcid)0000-0003-2361-1077$$aCalvo, Belén$$uUniversidad de Zaragoza 000087614 700__ $$0(orcid)0000-0002-5380-3013$$aMedrano, Nicolás$$uUniversidad de Zaragoza 000087614 7102_ $$15008$$2250$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Electrónica 000087614 773__ $$g19, 23 (2019), 5173 [18 pp.]$$pSensors$$tSensors (Switzerland)$$x1424-8220 000087614 8564_ $$s7389346$$uhttps://zaguan.unizar.es/record/87614/files/texto_completo.pdf$$yVersión publicada 000087614 8564_ $$s107553$$uhttps://zaguan.unizar.es/record/87614/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000087614 909CO $$ooai:zaguan.unizar.es:87614$$particulos$$pdriver 000087614 951__ $$a2020-07-16-09:43:08 000087614 980__ $$aARTICLE