Open Access Open Access  Restricted Access Subscription or Fee Access

Design of Differential Input High Gain Op-Amp Using 180 nm Technology

Kiran B. Admane, Dr. M. B. Mali


Operational amplifier is a building block of an analog electronic. Now more number of application are using in their product. A Two stage differential amplifier Dual input and single ended output opamp is designed for high gain, high bandwidth, and for high noise immunity. This design have DC gain of 70dB, Phase Margin=450, ICMR (+) =1.6v, ICMR (-) =0.8v, load capacitance ≤300µw. Vdd =1.8v. These specifications designed in the cadence virtuoso in 180nm technology.


Cadence Virtuoso, CMOS Opamp, Common Mode Rejection Ratio, Differential Amplifier, Phase Margin, Slew Rate.

Full Text:



Alexander Richter, Christoph Tzschoppe, Bastian Lindner, Frank Ellinger, “Low Power High Gain Bandwidth Opamp in Low Cost 180 nm Bulk CMOS Technology,” Microwave and Optoelectronics Conference (IMOC), 2015 SBMO/IEEE MTT-S International, 2015.

Abhishek Pandey, Subhra Chakraborty, Suraj Kumar Saw and Vijay Nath, “A Darlington Pair Transistor Based Operational Amplifier,” Proceedings of 2015 Global Conference on Communication Technologies (GCCT 2015), pp. 273- 276, 2015

Sonu Kumar, Anjali Sharma, Payal Jangra, Pooja Rathee, Rekha Yadav “Design of CMOS Operational Amplifier in 180nm Technology” International Journal of Innovative Research in Computer and Communication Engineering Vol. 5, Issue 4, April 2017.

Daibashish Gangopadhyay and T. K. Bhattacharyya, “A 2.3 GHz gm-boosted High Swing Class-AB Ultra-Wide Bandwidth Operational Amplifier in 0.18µm CMOS,”IEEE International Midwest Symposium on Circuits and Systems, pp. 713 - 716, 2010.

Hitesh Shrimali and Shouri Chatterjee, “11 GHz UGBW Op-amp with feed-forward compensation technique”, Circuit and Systems (ISCAS), 2011 IEEE International Symposium, pp. 17-20, 2011.

Kamyar Keikhosravy, Pouya Kamalinejad, Shahriar Mirabbasiand Victor Leung, “A Wideband Unity-Gain Buffer in 0.13-μm CMOS”, Electronics, circuits, and systems (ICECS), 2013 IEEE 20thIntternational Conference, pp. 9-12, 2013.

Ehsan Kargaran Hojat Khosrowjerdi and Karim Ghaffarzadegan, “A 1.5 V High Swing Ultra-Low-Power Two Stage CMOS OP-AMP in 0.18µm Technology,”2010 2nd International Conference on Mechanical and Electronics Engineering (ICMEE 2010), pp. vol 1, 68-71, 2010.

S.A EncheAb Rahim, Mohd Azmi Ismail, Dr. Ahmad Ismat Abdul Rahim, M.R Yahya, Dr. Abdul Fatah Awang Mat, “A Wide Gain-Bandwidth CMOS Fully-Differential Folded Cascode Amplifier,” 2010 International Conference on Electronic Devices, Systems and Applications (ICEDSA2010), pp. 165-168, 2010.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.