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Wideband transimpedance amplifier using negative capacitance and capacitive feedback

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Abstract

This paper presents a new wideband CMOS transimpedance amplifier (TIA) with low power dissipation. The negative capacitance technique is employed which reduces the parasitic capacitance. Furthermore, capacitive feedback technique is used in order to introduce pole-zero cancellation. Both these techniques, lead to bandwidth extension. Mentor Graphics Eldo simulation tool is used for simulation of the proposed TIA in TSMC 0.18 µm CMOS technology with 50 fF input photodiode capacitance. The simulated results show the − 3 dB bandwidth of 10.1 GHz which is about 8.3 GHz larger than simple TIA, transimpedance gain of 45.75 dBΩ and input current noise is 7.5 pA/√Hz with power consumption of 0.81 mW.

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Authors and Affiliations

  1. Division of Electronics and Communication Engineering, Netaji Subhas Institute of Technology, Sector-3, Dwarka, New Delhi, Delhi, 110078, India

    Preeti Singh, Maneesha Gupta & Urvashi Bansal

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  1. Preeti Singh
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  2. Maneesha Gupta
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  3. Urvashi Bansal
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Correspondence to Maneesha Gupta.

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Singh, P., Gupta, M. & Bansal, U. Wideband transimpedance amplifier using negative capacitance and capacitive feedback. Analog Integr Circ Sig Process 97, 269–279 (2018). https://doi.org/10.1007/s10470-018-1246-x

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  • DOI: https://doi.org/10.1007/s10470-018-1246-x

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