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Volume 18
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10.3390/s18051405
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Article

A 0.18 μm CMOS LDO Regulator for an On-Chip Sensor Array Impedance Measurement System

by
Jorge Pérez-Bailón
*,
Alejandro Márquez
,
Belén Calvo
and
Nicolás Medrano
Group of Electronic Design, Aragon Institute for Engineering Research, I3A, University of Zaragoza, 50009 Zaragoza, Spain
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(5), 1405; https://doi.org/10.3390/s18051405
Submission received: 27 March 2018 / Revised: 26 April 2018 / Accepted: 26 April 2018 / Published: 2 May 2018
(This article belongs to the Section Physical Sensors)
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Abstract

This paper presents a fully integrated 0.18 μm CMOS Low-Dropout (LDO) Voltage Regulator specifically designed to meet the stringent requirements of a battery-operated impedance spectrometry multichannel CMOS micro-instrument. The proposed LDO provides a regulated 1.8 V voltage from a 3.6 V to 1.94 V battery voltage over a −40 °C to 100 °C temperature range, with a compact topology (<0.10 mm2 area) and a constant quiescent current of only 7.45 μA with 99.985% current efficiency, achieving remarkable state-of-art Figures of Merit (FoMs) for the regulating–transient performance. Experimental measurements validate its suitability for the target application, paving the way towards the future achievement of a truly portable System on Chip (SoC) platform for impedance sensors.
Keywords: CMOS analog integrated circuits; low dropout regulator (LDO); impedance spectroscopy; sensor array CMOS analog integrated circuits; low dropout regulator (LDO); impedance spectroscopy; sensor array

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MDPI and ACS Style

Pérez-Bailón, J.; Márquez, A.; Calvo, B.; Medrano, N. A 0.18 μm CMOS LDO Regulator for an On-Chip Sensor Array Impedance Measurement System. Sensors 2018, 18, 1405. https://doi.org/10.3390/s18051405

AMA Style

Pérez-Bailón J, Márquez A, Calvo B, Medrano N. A 0.18 μm CMOS LDO Regulator for an On-Chip Sensor Array Impedance Measurement System. Sensors. 2018; 18(5):1405. https://doi.org/10.3390/s18051405

Chicago/Turabian Style

Pérez-Bailón, Jorge, Alejandro Márquez, Belén Calvo, and Nicolás Medrano. 2018. "A 0.18 μm CMOS LDO Regulator for an On-Chip Sensor Array Impedance Measurement System" Sensors 18, no. 5: 1405. https://doi.org/10.3390/s18051405

APA Style

Pérez-Bailón, J., Márquez, A., Calvo, B., & Medrano, N. (2018). A 0.18 μm CMOS LDO Regulator for an On-Chip Sensor Array Impedance Measurement System. Sensors, 18(5), 1405. https://doi.org/10.3390/s18051405

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