Abstract
In this paper, a new current mode precision rectifier circuit is proposed using a single EXCCII and two nMOS transistors. The novelty of the circuit is that it can provide all the possible rectified outputs, namely ± full wave as well as ± half wave simultaneously without any alteration of topology. Moreover, it has low input impedance and high output impedance, which is suitable for fully cascadable operation. It is suitable for a very high frequency of operation. The operating frequency is found to be 125 MHz and above. The temperature, average DC voltage output, noise, power consumption, input dynamic range (± 500 µA), Monte-Carlo and total harmonic distortion analysis are carried out to check the performance quality. The conversion of sinusoidal signal to root-mean-square circuit is also included here as an application of the proposed rectifier The proposed circuit is simulated using Cadence ORCAD PSpice simulator with 0.18 µm CMOS technology parameters. Simulation results agree well with the theoretical analysis.
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