A 0.5V, 900uW CMOS OTA Using Bulk Driven and Hybrid Compensation Technique

  • Seyedeh Sara Hassani Department of Electrical Engineering, Sadjad Institute for Higher Education, Mashhad, Iran
  • Abbas Golmakani Department of Electrical Engineering, Sadjad Institute for Higher Education, Mashhad, Iran

Abstract

Abstract— An ultra-low-voltage ultra-low-power operational transconductance amplifier (OTA) is presented in this paper. The proposed topology based on a bulk driven input differential pair. Two separate capacitors have been used for compensation of the opamp where one of them is used in a signal path and another one in a non-signal path. The circuit is designed in the 0.18µm CMOS technology. The simulation results show that the amplifier has a 84.1dB open-loop DC gain and a unity gain-bandwidth of 81 KHz while operating at 0.5V supply voltage. The total power consumption is as low as 900nW which makes it suitable for low-power bio-medical applications.

References

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Published
2014-03-08
How to Cite
Hassani, S. S., & Golmakani, A. (2014). A 0.5V, 900uW CMOS OTA Using Bulk Driven and Hybrid Compensation Technique. Majlesi Journal of Telecommunication Devices, 3(2). Retrieved from http://journals.iaumajlesi.ac.ir/td/index/index.php/td/article/view/166
Section
Articles