We have demonstrated a method for using proper models of pentacene P-channel and fullerene N-channel thin-film transistors\n(TFTs) in order to design and simulate organic integrated circuits. Initially, the transistors were fabricated, and we measured their\nmain physical and electrical parameters. Then, these organic TFTs (OTFTs) were modeled with support of an organic process\ndesign kit (OPDK) added in Cadence.The key specifications of the modeled elements were extracted frommeasured data, whereas\nthe fitting ones were elected to replicate experimental curves. The simulating process proves that frequency responses of the\nTFTs cover all biosignal frequency ranges; hence, it is reasonable to deploy the elements to design integrated circuits used in\nbiomedical applications. Complying with complementary rules, the organic circuits work properly, including logic gates, flipflops,\ncomparators, and analog-to-digital converters (ADCs) as well.The proposed successive-approximation-register (SAR) ADC\nconsumes a power of 883.7
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