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Differential input range driver for SAR ADC measurement setup


Yusuf, Siti Idzura and Shafie, Suhaidi and Abdul Majid, Hasmayadi and Abdul Halin, Izhal (2020) Differential input range driver for SAR ADC measurement setup. Indonesian Journal of Electrical Engineering and Computer Science, 17 (2). 750 - 758. ISSN 2502-4752; ESSN: 2502-4760


Differential successive approximation register (SAR) of analog to digital converter (ADC) requires two balancing input signals that have same amplitude with 180⁰ out of phase. Otherwise, it performs inaccurately and degrades the performance during ADC testing procedure. Therefore, an implementation of AD8139 chip single to differential amplifier was chosen as an ADC driver to generate sufficient differential output for the ADC. The chip was placed on a printed circuit board (PCB) to test the functionality as well as the performance of static and dynamic SAR ADC. The result shows that the single-ended input transform into differential voltage outputs. The amplitudes for the amplifier remain equal and is 180° out of phase for DC and AC voltage input signal. Besides, the fabricated 0.18µm CMOS technology of differential 10-bit SAR ADC is capable of digitising full code digital output and perform 9.5-bit effective number of bit (ENOB) from analog input driving by the ADC driver.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Institute of Advanced Technology
DOI Number: https://doi.org/10.11591/ijeecs.v17.i2.pp750-758
Publisher: Institute of Advanced Engineering and Science
Keywords: ADC driver; Analog to digital converter; Differential successive register; Single to differential amplifier
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 27 Dec 2021 03:46
Last Modified: 27 Dec 2021 03:46
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.11591/ijeecs.v17.i2.pp750-758
URI: http://psasir.upm.edu.my/id/eprint/88467
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