Low-Power Process-Insensitive Operational Amplifier Design

  • D. AnithaEmail author
  • K. Manjunatha Chari
  • P. Satish Kumar
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 862)


A low-power process-insensitive buffered operational amplifier (Opamp) is presented. Current reference circuit of the Opamp is designed by a process invariant current source to achieve better tolerance to process variations without degrading other performance parameters. Simulation results are obtained by using Cadencetools with GPDK 180 nm library and supply voltage of ±0.6 V. The proposed Opamp has shown 42% better process tolerance than the basic CMOS Opamp and it consumes only 54 uW of power, whereas the power consumption is 91 uW for the later.


Opamp Process insensitive Low power Current reference 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • D. Anitha
    • 1
    Email author
  • K. Manjunatha Chari
    • 1
  • P. Satish Kumar
    • 2
  1. 1.Department of ECEGITAM UniversityHyderabadIndia
  2. 2.Department of ECEACE College of EngineeringHyderabadIndia

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