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A wideband linear tunable CDTA and its application in field programmable analogue array

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Abstract

In this paper, a NMOS-based wideband low power and linear tunable transconductance current differencing transconductance amplifier (CDTA) is presented. Based on the NMOS CDTA, a novel simple and easily reconfigurable configurable analogue block (CAB) is designed. Moreover, using the novel CAB, a simple and versatile butterfly-shaped FPAA structure is introduced. The FPAA consists of six identical CABs, and it could realize six order current-mode low pass filter, second order current-mode universal filter, current-mode quadrature oscillator, current-mode multi-phase oscillator and current-mode multiplier for analog signal processing. The Cadence IC Design Tools 5.1.41 post-layout simulation and measurement results are included to confirm the theory.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (No. 61274020) and the Open Fund Project of Key Laboratory in Hunan Universities (No. 15K027). The authors would like to thank the engineers Guorong Shen and Yuan Cai in Integrated Circuit Technology and Industry Promotion Center in Shanghai for the fabrication of the chips. The authors also would like to thank the engineer Guangwu Wang in Shaoguang Semiconductor Co., Ltd in Changsha for the measurements and the valuable suggestion and discussion of the proposed circuits.

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Authors and Affiliations

  1. College of Computer Science and Electronic Engineering, Hunan University, Changsha, 410082, People’s Republic of China

    Zhenhua Hu, Chunhua Wang, Jingru Sun & Jie Jin

  2. School of Engineering and Technology, University of Hertfordshire, Hatfield, Herts, AL10 9AB, England, UK

    Yichuang Sun

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  1. Zhenhua Hu
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Correspondence to Chunhua Wang.

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Hu, Z., Wang, C., Sun, J. et al. A wideband linear tunable CDTA and its application in field programmable analogue array. Analog Integr Circ Sig Process 88, 465–483 (2016). https://doi.org/10.1007/s10470-016-0772-7

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