Electronically Tunable Current Mode Instrumentation Amplifier Employing Single DV-EXCCCII

Abstract

In this paper, a new design of a current mode instrumentation amplifier (CMIA) is presented using a single differential voltage extra-X current controlled current conveyor (DV-EXCCCII) and a grounded resistor. Therefore, this circuit design is very simple and suitable for IC integration. The proposed circuit of instrumentation amplifier has high output impedance so it is easily cascadable with other current mode circuits without buffer requirement. Furthermore, the proposed circuit is electronically tunable with the bias current of the active element used. This circuit offers good frequency performance with wide differential gain and CMRR bandwidth. The non-idealities and parasitic effects of the proposed circuit are also investigated. To validate the proposed instrumentation amplifier, various simulations are performed using the CADENCE VIRTUOSO SPECTRE simulator using 0.18 µm CMOS technology parameters.

KEYWORDS:

• CMRR
• Current mode circuits
• DV-EXCCCII
• Electronically tunable
• Instrumentation amplifier

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Priyanka Singh

Priyanka Singh received the BTech degree in electronics and communication engineering from Uttar Pradesh Technical University, Lucknow, India in 2013 and MTech degree in advanced networks from ABV-IIITM Gwalior, India in 2016. She is currently pursuing PhD at the Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology Allahabad, India. Her research interest includes analog signal processing.

R. K. Nagaria

R K Nagaria received the BTech and MTech degrees in electronics engineering from Kamla Nehru Institute of Technology Sultanpur, India in 1988 and 1996, respectively and the PhD degree from Jadhavpur University Kolkata, India in 2004. He is currently working as a professor in the Department of Electronics and Communication Engineering, Motilal Nehru National Institute of Technology Allahabad, India since January 2009. He has 28 years of teaching and research experience and contributed more than 80 research articles. His main research interest includes analog/mixed mode circuits and low power VLSI circuits and systems. Email: [email protected]