Extended Bandwidth Method on Symmetrical OTA and Filter Application

Mustafa Konal, Firat Kacar


In this paper, a symmetrical operational transconductance amplifier (OTA) circuit with extended bandwidth using resistive compensation technique is proposed. Into the all current mirrors of the symmetrical OTA circuit, this technique is applied. A passive resistor is connected between the gate and the drain of each primary transistor of the current mirrors in the symmetrical OTA structure. In addition, filter structures are realized in order to analyze the performance of the symmetrical OTA with extended bandwidth. Thus, the advantage of using resistive compensation technique is demonstrated. The symmetrical OTA with extended bandwidth and the filters are simulated with LTSPICE by using TSMC 0.18 μm CMOS process parameters.


Symmetrical OTA; extended bandwidth; filter

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DOI: https://doi.org/10.33180/InfMIDEM2021.201


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