000087613 001__ 87613
000087613 005__ 20230914083240.0
000087613 0247_ $$2doi$$a10.3390/electronics8121413
000087613 0248_ $$2sideral$$a115824
000087613 037__ $$aART-2019-115824
000087613 041__ $$aeng
000087613 100__ $$aMaya, Paulina
000087613 245__ $$aLow cost autonomous lock-in amplifier for resistance/capacitance sensor measurements
000087613 260__ $$c2019
000087613 5060_ $$aAccess copy available to the general public$$fUnrestricted
000087613 5203_ $$aThis paper presents the design and experimental characterization of a portable high-precision single-phase lock-in instrument with phase adjustment. The core consists of an analog lock-in amplifier IC prototype, integrated in 0.18 µm CMOS technology with 1.8 V supply, which features programmable gain and operating frequency, resulting in a versatile on-chip solution with power consumption below 834 µW. It incorporates automatic phase alignment of the input and reference signals, performed through both a fixed-90° and a 4-bit digitally programmable phase shifter, specifically designed using commercially available components to operate at 1 kHz frequency. The system is driven by an Arduino YUN board, thus overall conforming a low-cost autonomous signal recovery instrument to determine, in real time, the electrical equivalent of resistive and capacitive sensors with a sensitivity of 16.3 µV/O @ erS < 3 % and 37 kV/F @ erS < 5 %, respectively.
000087613 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/TEC2015-65750-R
000087613 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000087613 590__ $$a2.412$$b2019
000087613 591__ $$aENGINEERING, ELECTRICAL & ELECTRONIC$$b125 / 265 = 0.472$$c2019$$dQ2$$eT2
000087613 592__ $$a0.303$$b2019
000087613 593__ $$aElectrical and Electronic Engineering$$c2019$$dQ2
000087613 593__ $$aControl and Systems Engineering$$c2019$$dQ3
000087613 593__ $$aSignal Processing$$c2019$$dQ3
000087613 593__ $$aHardware and Architecture$$c2019$$dQ3
000087613 593__ $$aComputer Networks and Communications$$c2019$$dQ3
000087613 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000087613 700__ $$0(orcid)0000-0003-2361-1077$$aCalvo, Belén$$uUniversidad de Zaragoza
000087613 700__ $$aSanz-Pascual, María Teresa
000087613 700__ $$aOsorio, Javier
000087613 7102_ $$15008$$2250$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Electrónica
000087613 773__ $$g8, 12 (2019), 1413 [18 pp.]$$pElectronics (Basel)$$tElectronics$$x2079-9292
000087613 8564_ $$s3413300$$uhttps://zaguan.unizar.es/record/87613/files/texto_completo.pdf$$yVersión publicada
000087613 8564_ $$s105335$$uhttps://zaguan.unizar.es/record/87613/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000087613 909CO $$ooai:zaguan.unizar.es:87613$$particulos$$pdriver
000087613 951__ $$a2023-09-13-10:48:13
000087613 980__ $$aARTICLE