Spyridon Vlassis

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This paper introduces the novel design of a low-voltage low-power voltage rectifier based on bulk-driven (BD) winner-take-all (WTA) circuit. The proposed circuit is able to work as a halfor full-wave rectifier and it is specifically designed for battery-powered implantable and wearable medical devices. The main attractive features of the proposed circuit(More)
Designing integrated circuits able to work under low-voltage (LV) low-power (LP) condition is currently undergoing a very considerable boom. Reducing voltage supply and power consumption of integrated circuits is crucial factor since in general it ensures the device reliability, prevents overheating of the circuits and in particular prolongs the operation(More)
A low-voltage variable gain amplifier based on PMOS bulk-driven input stage is presented in this paper. The gain of the proposed amplifier has a linear in-dB gain dependency since it utilizes the conventional pseudo exponential approximation function (l+x)/(l-x). The master-slave technique is used in order to control the voltage gain. The amplifier is(More)
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