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Improving the bandwidth of the transimpedance amplifier based on CS stages in cascode configuration using impedance matching techniques

Authors
  • Abu-Taha, Jawdat Y.1
  • Yazgi, Metin1
  • 1 Istanbul Technical University, Department of Electrical & Electronics Engineering, Maslak, Ayazaga, Istanbul, 34469, Turkey , Istanbul (Turkey)
Type
Published Article
Journal
Analog Integrated Circuits and Signal Processing
Publisher
Springer US
Publication Date
May 17, 2016
Volume
89
Issue
3
Pages
685–691
Identifiers
DOI: 10.1007/s10470-016-0757-6
Source
Springer Nature
Keywords
License
Yellow

Abstract

This paper describes a matching technique to improve the bandwidth of multi-GHz frequency ranges for the transimpedance amplifier. It is shown that by simultaneously using of series input matching topology and T-output matching network, the bandwidth of the TIA can be obviously improved. This methodology is supported by a design example in a 0.18 μm CMOS technology. The post layout simulation results show a −3dB bandwidth of 20 GHz with 50 fF photodiode capacitance, a transimpedance gain of 52.6dBΩ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$52.6\,{\mathrm {dB\Omega }}$$\end{document}, 11pA/Hz\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$11\,{\mathrm {pA / \sqrt{Hz}}}$$\end{document} input referred noise and group delay less than 8.3ps\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$8.3\,{\mathrm {ps}}$$\end{document}. The TIA dissipates 1.3mW\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$1.3\,{\mathrm { mW}}$$\end{document} from a 1.8V\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$1.8 \,{\mathrm {V}}$$\end{document} supply voltage.

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