Design and Analysis of Operational Transconductance Amplifier (OTA)

Operational Transconductance Amplifier (OTA) is one of the most versatile and important circuit components in the analog and mixed signal circuit design. It is also one of the more complex cells to design. Basically there are many types of op-amp but OTA is different from others because OTA is voltage control current source device. For OTA, input will be voltage at different types and achieved current at output side. The main feature of paper is that it reduces the size of chip decreasing MOS transistor in conventional design of OTA which have 16 and our design reduce MOS transistor up to 10 and it reduce noise up to some extent and try to get good design which has higher output capability. This paper gives analysis of Schematic design and CMOS Layout of OTA for different types of inputs and gets parameter like Gain margin, Phase margin, Slew Rate, CMRR, Transient Time, Noise Spectral Density, PSRR, Power Dissipation and Power Consumption.