Abstract
In this paper, CMOS operational amplifier using a two stage has been enunciated for low power device application by using it in subthreshold region. The proposed op-amp shows high gain as well as moderate UGB using capacitor compensation technique circuit. It is operated on rail to rail power supply of ±500 mV. This amplifier is highly useful for biomedical application due to low power consumption. The designed operational amplifier gain is 48 dB, bandwidth is 29 kHz, phase margin is 61°, and slew rate is 50.6 V/µS with 21 nW power consumption. This circuit is designed and simulated in cadence analog and digital system design tools of UMC 90 nm CMOS technology.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Guo C, Zhu S, Hu J, Zou JJ, Sun H, Lv X (2011) A low voltage CMOS rail to rail operational amplifier based on flipped differential pairs. In: IEEE microwave, antenna, propagation and EMC technologies for wireless communications (MAPE) 217–220
Bhattacharyya TK, Haiti MK (2012) A power efficient and constant-gm 1.8 V CMOS operational transconductance amplifier with rail to rail input and output ranges for charge pump in phase locked loop. In: International conference on device, circuit and systems, pp 38–43
Hu Y, Sawan M (2003) A low power 900 mV rail-to- rail class-AB operational amplifier. IEEE J Electr Comput Eng 1:171–174
Lloyd J, Lee H-S (1994) A CMOS OP-AMP with fully-differential-gain-enhancement. IEEE Trans Circ Syst-II 41:241–243
Uhrmann H, Schlogl F, Schweiger K, Zimmermann H (2009) A 1 GHz-GBW operational amplifier for DVB-H receivers in 65 nm CMOS. In: IEEE design and diagnostic of electronic circuits and systems, pp 182–185
Gangopadhyay D, Bhattacharyya TK (2010) A 2.3 GHz gm- boosted high swing class AB ultra wide bandwidth operational amplifier in 0.18um CMOS. In: IEEE 53rd international midwest symposium on circuit and systems (MWSCAS), pp 713–716
Phillip E (2004) Allen and Douglas R, CMOS analog circuit design. Oxford University Press, Holberg
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Tyagi, S. et al. (2017). A 21nW CMOS Operational Amplifier for Biomedical Application. In: Nath, V. (eds) Proceedings of the International Conference on Nano-electronics, Circuits & Communication Systems. Lecture Notes in Electrical Engineering, vol 403. Springer, Singapore. https://doi.org/10.1007/978-981-10-2999-8_33
Download citation
DOI: https://doi.org/10.1007/978-981-10-2999-8_33
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-2998-1
Online ISBN: 978-981-10-2999-8
eBook Packages: EngineeringEngineering (R0)