Voltage mode and trans-admittance mode first-order universal filters employing DV-EXCCCII

ABSTRACT

This paper reports a first-order voltage mode and trans-admittance mode universal filter from the same circuit structure. This configuration employs a single Differential Voltage Extra-X Current Controlled Current Conveyor (DV-EXCCCII) and one capacitor to realise a first-order Low Pass Filter (LPF), High Pass Filter (HPF), and All Pass Filter (APF) in voltage mode and trans-admittance mode. The DV-EXCCCII is an electronically tunable analog block, so the filter response can be varied with the bias current of the DV-EXCCCII. No matching constraints are necessary to realise the proposed filter. The sensitivity is found to be low because of passive components and also due to non-idealities. The reported circuit configuration is implemented through CADENCE VIRTUOSO and verified in SPECTRE using 0.18 µm UMC CMOS technology process parameters.

KEYWORDS:

• Universal filter
• voltage mode
• trans-admittance mode
• DV-EXCCCII
• analog signal processing
• electronically tunable

Disclosure statement

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

Additional information

Notes on contributors

Priyanka Singh

Priyanka Singh received B.Tech. degree in Electronics and Communication Engineering from Uttar Pradesh Technical University, Lucknow, India in 2013 and M.Tech. degree from ABV-IIITM Gwalior, India in 2016. She is currently pursuing Ph.D. degree in Electronics and Communication Engineering Department from Motilal Nehru National Institute of Technology Allahabad, India. Her research interest includes analog signal processing.

R. K. Nagaria

R. K. Nagaria received B.Tech and M.Tech degree in Electronics Engineering from KNIT Sultanpur, India in 1988 and 1996 respectively and the Ph.D degree from Jadhavpur University Kolkata, India in 2004. He is currently working as a full 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 eighty research articles. His main research interest includes Analog/Mixed-mode circuits and Low power VLSI circuits and systems.