Abstract: This paper represents the analysis and design of two-stage operational transconductance amplifier (OTA) used in switched-capacitor (SC) circuits. The existing design methods for two-stage OTAs often lead to sub optimal solutions because they decouple inter-related metrics like noise and settling performance. In this approach, the cadence tool is used to analysis the transient response, AC response and phase plot of the OTA and also the settling time has been observed on the simulation. For the optimization routine, there is no need to interface with a circuit simulator because all significant devices parasitic are included in the tool. The simulation results show that a 90-nm prototype amplifier achieves the settling time of 1.5 ns with reduced integrated noise while consuming 2.3 mW from a 1.1V power supply with phase plot for 174 degree.
Keywords: Two stage OTA, transient response, settling time, power, cadence tool.
Title: Analysis and Design of Operational Transconductance Amplifier (OTA) using Cadence tool
Author: S.Hari Krishnan, H.Hemavathi
International Journal of Engineering Research and Reviews
ISSN 2348-697X (Online)
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