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Design of Two Stage OpAmp with Miller Compensation Series Resistance

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posted on 2023-06-02, 07:54 authored by Ashwith Kumar Reddy PenubadiAshwith Kumar Reddy Penubadi, Dr. Srividya P

In this paper, design of Two stage opamp has been introduced with Miller compensation for high gain and phase margin suitable for Sample Hold Amplifiers and ADC applications. Two-stage operational amplifiers provide a versatile and high-performance solution for numerous analog signal processing applications. By combining the benefits of a differential amplifier and a gain stage, two-stage op-amps offer improved gain, wider bandwidth, and increased output voltage swing compared to single-stage op-amps. Careful consideration of design parameters, compensation techniques, and performance characteristics enables the creation of efficient and stable two-stage op-amps that meet. The designed opamp has 77dB of gain and 72deg phase margin with a CMRR of 114dB and PSRR of -78.5dB compromising on 60% reduction in slew rate but the power dissipation is greatly reduced. Hence for stability purposes the series resistor Opamp can be used in Sample and Hold Amplifiers and ADC applications.

History

Email Address of Submitting Author

pashwithkumarr.ec19@rvce.edu.in

Submitting Author's Institution

Rashtreeya Vidyalaya College of Engineering

Submitting Author's Country

  • India