70670 20181025115742.0 doi 10.1016/j.proeng.2016.11.491 sideral 106037 ART-2016-106037 eng Martinez-Nieto, A. A CMOS Mixed Mode Non-Linear Processing Unit for Adaptive Sensor Conditioning in Portable Smart Systems 2016 Access copy available to the general public Unrestricted This paper presents the architecture of a novel non-linear digitally programmable analog unit for sensor output conditioning in battery-operated smart systems. Designed in an 180nm 1.8V standard CMOS technology, by properly setting the 6-bit registers in the arithmetic unit, the voltage inputs are weighted before being processed by a non-linear circuit. Thus, a processing system consisting of a set of these devices suitably tuned and interconnected can be applied to condition a non-linear sensor, improving its behavior both in linearity and operating range, while reducing the effects of cross sensitivity. The robustness of the digital weight tuning is tested simulating a chip-on-the-loop training using a Levenberg-Marquardt-based algorithm. Electric simulations of the proposed unit and the results of its application in a complete neural network-based processing system to improve the linear operating range of a thermistor are presented. info:eu-repo/grantAgreement/ES/MINECO-FEDER/TEC2015-65750-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sanz-Pascual, M.T. (orcid)0000-0002-4949-1539 Marquez, A. Universidad de Zaragoza (orcid)0000-0002-8617-5703 Perez-Bailon, J. Universidad de Zaragoza (orcid)0000-0003-2361-1077 Calvo, B. Universidad de Zaragoza (orcid)0000-0002-5380-3013 Medrano, N. Universidad de Zaragoza 5008 250 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Electrónica 168 (2016), 1689-1692 Procedia Engineering 1877-7058 300824 http://zaguan.unizar.es/record/70670/files/texto_completo.pdf Versión publicada 7019 http://zaguan.unizar.es/record/70670/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:70670 articulos driver 2018-10-25-08:51:05 ARTICLE