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Current-Mode Square-Rooting Circuit Based on CMOS Translinear
Author(s)
Date Issued
August 20, 2018
Type
Conference Paper
Abstract
In this paper, a new current-mode square-rooting circuit based on translinear principle is proposed. The saturation mode of MOS transistors is used for realizing the proposed circuit with ± 1.5V power supplies. Square-rooting circuit is realized from the translinear type-A and current computation which uses totally eighteen MOS transistors. The circuit has two inputs which one performs as input and another one for a variable gain. Two input positions are similar characteristic which are able to swap generally. The gain of proposed square-rooting can be electronically tuned by bias current. The current output is accurately compared with the ideal square-rooting function. The error at current output is achieved lower than 4%along 150μA of input range. High frequency sinusoidal signal can be operated up to 5MHz. The proposed circuit is suitable for applying in the varieties of analogue signal-processing applications. The simulation results are depicted to confirm the theoretical analysis by using PSpice. Moreover, layout and post layout simulation results are included.
Citation
2018 41st International Conference on Telecommunications and Signal Processing Tsp 2018, 2018