Please use this identifier to cite or link to this item: http://repositorio.inesctec.pt/handle/123456789/6475
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dc.contributor.authorBahubalindruni,PGen
dc.contributor.authorVítor Grade Tavaresen
dc.contributor.authorMartins,Ren
dc.contributor.authorFortunato,Een
dc.contributor.authorBarquinha,Pen
dc.date.accessioned2018-01-16T16:58:10Z-
dc.date.available2018-01-16T16:58:10Z-
dc.date.issued2017en
dc.identifier.urihttp://repositorio.inesctec.pt/handle/123456789/6475-
dc.identifier.urihttp://dx.doi.org/10.1109/tcsi.2016.2635442en
dc.description.abstractThis paper presents a novel low-power analog circuit, with n-type IGZO TFTs that can function as an adder operator or be designed to operate as a driver. Experiments were set to show summation of up to four signals. However, the design can easily be expanded to add higher number of signals, by appending a single TFT at the input per each additional signal. The circuit is simple, uses a single power supply irrespective to the number of input voltage signals, and shows good accuracy over a reasonable range of input values. By choosing proper TFT dimensions, the topology can replace the typical output drivers of TFT amplifiers, namely the common-drain with current source biasing, or the common-source with diode connected load. The circuit was fabricated with a temperature that does not exceeds 200 degrees C. Its performance is characterized from measurements at room temperature and normal ambient, with a power supply voltage of 12 V and a load of approximate to 4 pF. The proposed circuit has shown a linearity error less than 3.2% (up to an input signal peak-to-peak value of 2 V), a power consumption of 78 mu W and a bandwidth of approximate to 115 kHz, under worst case condition (when it is adding four signals with the same frequency). It has shown superior performance in terms of linearity when compared to the typical drivers considered in this study. In addition, it has shown almost the same behavior when measurements were repeated after one year. Therefore, the proposed circuit is a robust viable alternative to conventional approaches, being more compact, and contributes to increase the functionality of large-area flexible electronics.en
dc.languageengen
dc.relation2152en
dc.rightsinfo:eu-repo/semantics/openAccessen
dc.titleA Low-Power Analog Adder and Driver Using a-IGZO TFTsen
dc.typearticleen
dc.typePublicationen
Appears in Collections:CTM - Articles in International Journals

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