Abstract
This paper proposes a novel monostable multivibrator featuring compact topology and current-tunable property. The proposed circuit was composed of a single differential input single output operational transconductance amplifier (DISO-OTA) with a few passive components. It was operated by a negative-edge triggering signal to generate an output pulse. The pulse height and width were tunable by the bias current of DISO-OTA and the external resistors. The proposed scheme is more compact than the existing topologies. This paper presents the circuit operations and a discussion of the non-ideal issues and design considerations. To demonstrate the feasibility of the proposed circuit, a prototype circuit built with commercially available DISO-OTA IC was used to execute the experimental tests. Is-Spice simulation and experimental results were consistent with theoretical analysis.
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