32218 20210121082902.0 doi 10.3390/s151025260 sideral 92276 ART-2015-92276 eng García-Romeo, D. Universidad de Zaragoza A high performance LIA-based interface for battery powered sensing devices 2015 Access copy available to the general public Unrestricted This paper proposes a battery-compatible electronic interface based on a general purpose lock-in amplifier (LIA) capable of recovering input signals up to the MHz range. The core is a novel ASIC fabricated in 1.8 V 0.18 µm CMOS technology, which contains a dual-phase analog lock-in amplifier consisting of carefully designed building blocks to allow configurability over a wide frequency range while maintaining low power consumption. It operates using square input signals. Hence, for battery-operated microcontrolled systems, where square reference and exciting signals can be generated by the embedded microcontroller, the system benefits from intrinsic advantages such as simplicity, versatility and reduction in power and size. Experimental results confirm the signal recovery capability with signal-to-noise power ratios down to -39 dB with relative errors below 0.07% up to 1 MHz. Furthermore, the system has been successfully tested measuring the response of a microcantilever-based resonant sensor, achieving similar results with better power-bandwidth trade-off compared to other LIAs based on commercial off-the-shelf (COTS) components and commercial LIA equipment. info:eu-repo/grantAgreement/ES/MINECO-FEDER/TEC2012-30802 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.033 2015 INSTRUMENTS & INSTRUMENTATION 12 / 56 = 0.214 2015 Q1 T1 CHEMISTRY, ANALYTICAL 36 / 75 = 0.48 2015 Q2 T2 ELECTROCHEMISTRY 16 / 27 = 0.593 2015 Q3 T2 0.647 2015 Electrical and Electronic Engineering 2015 Q1 Analytical Chemistry 2015 Q2 Atomic and Molecular Physics, and Optics 2015 Q2 Medicine (miscellaneous) 2015 Q2 Instrumentation 2015 Q2 Biochemistry 2015 Q3 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0002-9416-7092 Valero, M.R. Universidad de Zaragoza (orcid)0000-0002-5380-3013 Medrano, N. Universidad de Zaragoza (orcid)0000-0003-2361-1077 Calvo, B. Universidad de Zaragoza (orcid)0000-0003-0182-7723 Celma, S. Universidad de Zaragoza 5008 X Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Proy. investigación JBA 5008 250 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Electrónica 15, 10 (2015), 25260-25276 Sensors Sensors (Switzerland) 1424-8220 1315576 http://zaguan.unizar.es/record/32218/files/texto_completo.pdf Versión publicada 91946 http://zaguan.unizar.es/record/32218/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:32218 articulos driver 2021-01-21-08:16:17 ARTICLE