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Design and Analysis of Tunable Voltage Differencing Inverting Buffered Amplifier (VDIBA) with Enhanced Performance and Its Application in Filters

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Abstract

This paper proposes a high performance tunable Voltage Differencing Inverting Buffered Amplifier (VDIBA) where transconductance of VDIBA is enhanced by using programmable positive feedback technique and bandwidth is enhanced by using resistive compensation technique. The enhanced performance of proposed VDIBA is demonstrated by presenting detailed frequency analysis. Furthermore, it is verified that transconductance of proposed VDIBA can be enhanced up to 10.6 mS at tuning current (Ic) of 100 µA. Moreover, resistive compensation technique enhance bandwidth of propose circuit up to 263 MHz. To illustrate the effectiveness of proposed circuit, voltage mode universal biquad filter is designed as an application example. The pole frequency of proposed filter is tunable in range of 10.5–83.4 MHz. The proposed VDIBA and its filter applications are designed and simulated using TSMC 0.18 µm CMOS technology in Cadence virtuoso schematic composer at ± 0.6 V supply voltage.

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Authors and Affiliations

  1. Division of ECE, Netaji Subhas Institute of Technology, University of Delhi, Room No. 15, Sector-3, Dwarka, New Delhi, 110078, India

    Shweta Kumari & Maneesha Gupta

  2. Department of Electronics and Communication Engineering, NSIT, New Delhi, India

    Shweta Kumari & Maneesha Gupta

Authors
  1. Shweta Kumari
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  2. Maneesha Gupta
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Correspondence to Maneesha Gupta.

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Kumari, S., Gupta, M. Design and Analysis of Tunable Voltage Differencing Inverting Buffered Amplifier (VDIBA) with Enhanced Performance and Its Application in Filters. Wireless Pers Commun 100, 877–894 (2018). https://doi.org/10.1007/s11277-018-5355-8

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  • DOI: https://doi.org/10.1007/s11277-018-5355-8

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