Optimised design of an organic thin-film transistor amplifier using the gm/ID methodology

Most of the applications of circuits that are currently in existence use mainly digital circuits. However, interfacing with the external world is a task that can be only accomplished by analog circuits. Thus, to obtain a functional system, some attention must be paid to them, especially when using organic thin-film transistors. In this case, some new issues arise that are very different from those in the digital world. Analog circuits pose a special problem to analog designers. Owing to their low mobilities, they present very low gains, and biasing them in the right point becomes a critical point. Another critical aspect is the high parameter dispersion, which makes analog designs quite complex. In this study, we will try to present a similar strategy, adapted to the specific case of organic TFTs.