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Study and Implementation of Gain Boost Class-C Inverter in CMOS 50nm Technology

Atulkumar Sojitra, Arun Nandurbarkar

This paper describes the Gain boost class–C inverter circuit, which is used in place of OTA (Operational Transconductance Amplifier) block in ΣΔ modulator .The gain boost class-C inverter behaves as a low voltage, subthreshold amplifier and boosts its DC gain for the high precision requirement. First a traditional cascade class-C inverter is presented, another inverter circuit present in this paper is “Gain boost class-C inverter”. It is implemented in 50nm CMOS technology and simulation is done using the LTSpice simulation tool.