Design of an Area Efficient and High-gain CMOS Instrumentation Amplifier for VLSI Applications

In the present work, a new and improved CMOS instrumentation amplifier has been discussed for VLSI application. Low power differential amplifier and operational amplifier have also been designed here. Instrumentation amplifier has generally been preferred due to its easy gain changeability process. The designed CMOS instrumentation amplifier revealed satisfactory results in terms of gain, common mode rejection (CMRR), power consumption. On analysis, the proposed CMOS instrumentation amplifier shows a gain of 95.59 dB, CMRR of 108.4dB. On the other hand, Gain bandwidth is measured to be 3.95 MHz and power consumption of 4.85mW. The layout of the proposed instrumentation amplifier occupies an area of 34.74um*37.5um. The proposed circuit has been tested at 1.8V and the simulation has been carried out with the help of cadence analog design environment with UMC 90nm technology.

[1]  T. Yorozu,et al.  Electron Spectroscopy Studies on Magneto-Optical Media and Plastic Substrate Interface , 1987, IEEE Translation Journal on Magnetics in Japan.

[2]  Jing Li,et al.  CMRR Analysis of the 3 Op-Amp Instrumentation Amplifier with Noise , 2014 .

[3]  Franziska Hoffmann,et al.  Design Of Analog Cmos Integrated Circuits , 2016 .

[4]  Vijay Nath,et al.  Design of CMOS Integrator Circuit for Sigma Delta ADC for Aerospace Application , 2018 .

[5]  C. A. Grimbergen,et al.  Amplifiers for bioelectric events: A design with a minimal number of parts , 1994, Medical and Biological Engineering and Computing.

[6]  Vijay Nath,et al.  A 0.6 V 117 nW high performance energy efficient system-on-chip (SoC) CMOS temperature sensor in 0.18 µm CMOS for aerospace applications , 2018, Microsystem Technologies.

[7]  Rajiv Kapadia.  Operational Amplifiers and Linear Integrated Circuits , 2007 .

[8]  Vijay Nath,et al.  A High-Performance Energy-Efficient 75.17 dB Two-Stage Operational Amplifier , 2018, Nanoelectronics, Circuits and Communication Systems.

[9]  Andreas Demosthenous,et al.  A CMOS Instrumentation Amplifier With 90-dB CMRR at 2-MHz Using Capacitive Neutralization: Analysis, Design Considerations, and Implementation , 2011, IEEE Transactions on Circuits and Systems I: Regular Papers.

[10]  Vijay Nath,et al.  Design of 30 MHz CMOS Operational Amplifier , 2017 .

[11]  Vijay Nath,et al.  An ultra-low power high-performance CMOS temperature sensor with an inaccuracy of − 0.3 °C/ + 0.1 °C for aerospace applications , 2018 .

[12]  Vincenzo Stornelli,et al.  A low-voltage low-power instrumentation amplifier based on supply current sensing technique , 2018 .

[13]  Gurmohan Singh,et al.  Novel High Gain Low Noise CMOS Instrumentation Amplifier for Biomedical Applications , 2013, 2013 International Conference on Machine Intelligence and Research Advancement.

[14]  Vijay Nath,et al.  Switched Capacitor Circuit Realization of Sigma-Delta ADC for Temperature Sensor , 2017 .

[15]  Manish Goswami,et al.  DC suppressed high gain active CMOS instrumentation amplifier for biomedical application , 2011, 2011 International Conference on Emerging Trends in Electrical and Computer Technology.