Abstract
A ‘mixed’-mode neural network is one in which the neuronal states are represented by voltages and the synaptic signals are conveyed by currents. This results in a lower complexity circuit since the synaptic resistances are not required. The present chapter discusses a mixed-mode variant of the voltage-mode linear equation solver presented in the previous chapter. The Differential Voltage Current Conveyor (DVCC) has been used as the analog building block to realize a voltage comparator with current outputs. Further, a digitally programmable version of the mixed-mode circuit is also presented and a mechanism to adjust the weights corresponding to the coefficients in the set of linear equations is also discussed. Effect of deviations from ideal device behaviour, like offsets in the DVCC and opamps, is also explored.
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References
Elwan, H.O., Soliman, A.M.: Novel CMOS differential voltage current conveyor and its applications. IEE Proc. Circ. Dev. Syst. 144(3), 195–200 (1997)
Maheshwari, S.: A canonical voltage-controlled VM-APS with a grounded capacitor. Circ. Syst. Sig. Proces. 27(1), 123–132 (2008)
Soliman, A.M.: Generation and classification of Kerwin-Huelsman-Newcomb circuits using the DVCC. Int. J. Circ. Theory Appl. 37, 835–855 (2008)
Hassan, T.M., Mahmoud, S.A.: New CMOS DVCC realization and applications to instrumentation amplifier and active-RC filters. Int. J. Electron. Commun. 64, 47–55 (2010)
Khateba, F., Khatiba, N., Koton, J.: Novel low-voltage ultra-low-power DVCC based on floating-gate folded cascode OTA. Microelectron. J. 42(8), 1010–1017 (2011)
Rahman, S.A., Jayadeva, Dutta Roy, S.C.: Neural network approach to graph colouring. Electron. Lett. 35(14), 1173–1175 (1999)
Rahman, S.A.: A nonlinear synapse neural network and its applications. PhD thesis, Department of Electrical Engineering, Indian Institute of Technology, Delhi, India (2007)
Tank, D., Hopfield, J.: Simple ‘neural’ optimization networks: an A/D converter, signal decision circuit, and a linear programming circuit. IEEE Trans. Circ. Syst. 33(5), 533–541 (1986)
LMC7101A. National semiconductor inc. http://www.national.com/assets/en/tools/spice/LMC7101A.MOD. Last Accessed on 25 Oct 2012
Hassan, T.M., Mahmoud, S.A.: Fully programmable universal filter with independent gain-\({\omega }_o-{\rm Q}\) control based on new digitally programmable CMOS CCII. J. Circ. Syst. Comput. 18(5), 875–897 (2009)
Plummer, J.D., Deal, M.D., Griffin, P.B.: Silicon VLSI Technology: Fundamentals, Practice and Modeling. Prentice Hall, Upper Saddle River (2000)
Hu, J., Xu, T., Zhang, W., Xia, Y.: A CMOS rail-to-rail differential voltage current conveyor and its applications. In: Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on, vol. 2. IEEE (2005)
Mahmoud, S.A.: Low voltage wide range CMOS differential voltage current conveyor and its applications. Contemp. Eng. Sci. 1(3), 105–126 (2008)
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Ansari, M.S. (2014). Mixed-Mode Neural Circuit for Solving Linear Equations. In: Non-Linear Feedback Neural Networks. Studies in Computational Intelligence, vol 508. Springer, New Delhi. https://doi.org/10.1007/978-81-322-1563-9_4
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DOI: https://doi.org/10.1007/978-81-322-1563-9_4
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