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Synthesis of programmable multi-input current-mode linear analog circuits

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3 Author(s)
Ray, B.N. ; Electron. & Tele-Commun. Eng. Dept., Bengal Eng. Coll., Howrah, India ; Nandi, P.K. ; Chaudhuri, P.P.

This paper reports synthesis methodologies for linear analog circuits. A generalized multi-input operational transconductance amplifier (OTA) network has been synthesized that can be easily programmed to realize different analog functions. The design of the multifunction network has been realized without any switches. The inherent characteristic of OTA as a voltage-to-current (V-I) converter with differential input has been exploited in the synthesis procedure. Efficient analog circuits synthesized with programmable OTA network are reported along with simulation results. The theoretical analysis supported by extensive experimental results confirms low sensitivity, high-frequency response, and efficient programmability of the proposed OTA network to realize different types of filters.

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:51 ,  Issue: 8 )