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Wireless Personal Communications
Erschienen in: Wireless Personal Communications 2/2019

04.04.2019

High Precision Low-Voltage WTA/LTA Circuit for Signal Processing Applications

verfasst von: Rishikesh Pandey, Sahib Singh

Erschienen in: Wireless Personal Communications | Ausgabe 2/2019

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Abstract

The paper proposes low-voltage current mode winner takes all (WTA)/loser takes all (LTA) circuit which detects maximum and minimum values from the given current inputs simultaneously. The circuit is developed using high swing self-biased cascode current mirror and a subtractor circuit. The cascode current mirror is used to improve the accuracy of current mirroring action over a wide input current range and subtractor circuit is used to compute the difference of two input currents. The proposed circuit operates at supply voltage of 1.1 V with high precision. The output current is mirrored with transfer error of 0.03% while input current is varying from 0 to 40 μA. Simulations have been performed using SPICE level 53 (TSMC) parameters in 0.18 μm CMOS technology. Some of the applications of the proposed WTA/LTA circuit such as half wave rectifier, full wave rectifier and modulus circuit have also been presented to show the effectiveness of the proposed circuit.
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Metadaten
Titel
High Precision Low-Voltage WTA/LTA Circuit for Signal Processing Applications
verfasst von
Rishikesh Pandey
Sahib Singh
Publikationsdatum
04.04.2019
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 2/2019
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-019-06334-w

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