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A Study on Feed Forward Technique In CMOS OTA Circuits

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Executive Summary

In the recent years, with the scaling of modern CMOS technologies and wide use of portable equipments reduction of the supply voltage in integrated circuits has increased rapidly. Research efforts have been made in reducing total power consumption and improving the noise margin of the operational amplifiers. In this paper, a study in terms of gain, unity gain frequency of Operational Transconductance Amplifiers (OTAs) using feedforward technique with FDCM has been carried out. OTA having feedforward technique with FDCM shows gain of 68 dB at 1nA bias current and 10 KHz - 1GHz unity gain frequency characteristics. The input bias current from 1nA to 1mA has been varied for study.

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