Low voltage low power CMOS current differencing buffered amplifier
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KünyeÇakır, C., Minaei, S., & Çiçekoğlu, O. (2010). Low voltage low power CMOS current differencing buffered amplifier. Analog Integrated Circuits and Signal Processing, 62(2), 237-244. http://dx.doi.org/10.1007/s10470-009-9350-6
The major goal of this work is to present a new CMOS realization for the current differencing buffered amplifier (CDBA). A design technique based on flipped voltage follower current sources is preferred to obtain a high performance CDBA. The proposed circuit can operate with the minimum supply voltages of +/- 0.6 V. It also consumes less power than its counterparts that have been reported so far. Moreover, the proposed CDBA has good voltage and current gain accuracies. For the simulations, UMC 0.18 mu m CMOS process is used. The performance of the CDBA is verified with HSPICE. Finally, a second-order, allpass/notch filter configuration is proposed to show the performance and usefulness of the circuit. The results from HSPICE simulations are in remarkable agreement with the expected ones.