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The input offset voltage of the differential amplifier based on the bipolar junction transistors, which operate at high current density, is analysed in this work. An analytical approach based on the equations in the explicit form is used to determine the input offset voltage reduction means. The obtained results are tested using numerical simulation of the differential amplifier.
This paper describes a novel two-stage fully-differential CMOS amplifier comprising two self-biased inverter stages, with optimum compensation and high efficiency. Although it relies on a class A topology, it is shown through simulations, that it achieves the highest efficiency of its class and comparable to the best class AB amplifiers. Due to the self-biasing, a low variability in the DC gain over...
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