Tamaddon, Mohsen, Yavari, Mohammad. (1395). Time-Mode Signal Quantization for Use in Sigma-Delta Modulators. نشریه مهندسی عمران امیرکبیر, 48(1), 53-61. doi: 10.22060/eej.2016.631
Mohsen Tamaddon; Mohammad Yavari. "Time-Mode Signal Quantization for Use in Sigma-Delta Modulators". نشریه مهندسی عمران امیرکبیر, 48, 1, 1395, 53-61. doi: 10.22060/eej.2016.631
Tamaddon, Mohsen, Yavari, Mohammad. (1395). 'Time-Mode Signal Quantization for Use in Sigma-Delta Modulators', نشریه مهندسی عمران امیرکبیر, 48(1), pp. 53-61. doi: 10.22060/eej.2016.631
Tamaddon, Mohsen, Yavari, Mohammad. Time-Mode Signal Quantization for Use in Sigma-Delta Modulators. نشریه مهندسی عمران امیرکبیر, 1395; 48(1): 53-61. doi: 10.22060/eej.2016.631

Time-Mode Signal Quantization for Use in Sigma-Delta Modulators

AUT Journal of Electrical Engineering
مقاله 6، دوره 48، شماره 1، 2016، صفحه 53-61    اصل مقاله (615.91 K)
نوع مقاله: Research Article
شناسه دیجیتال (DOI): 10.22060/eej.2016.631
نویسندگان
Mohsen Tamaddon* 1؛ Mohammad Yavari2
1Ph.D. Student, Integrated Circuits Design Laboratory, Department of Electrical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
2Associate Professor, Ph.D. Student, Integrated Circuits Design Laboratory, Department of Electrical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
چکیده
The rapid scaling in modern CMOS technology has motivated the researchers to design new analog-to-digital converter (ADC) architectures that can properly work in lower supply voltage. An exchanging the data quantization procedure from the amplitude to the time domain, can be a promising alternative well adapt with the technology scaling. This paper is going to review the recent development in time-based noise-shaping ADCs, so-called as time-based sigma-delta modulators. Two of the most important architectures named as voltage-controlled oscillator (VCO) -based and time-to-digital (TDC) -based sigma-delta modulators (SDMs) are selected to be reviewed in this paper. The intrinsic advantages and limitations of the these structures are briefly explored. To confirm the effectiveness of the time-mode sigma-delta modulators, a TDC-based continuous-time sigma-delta modulator is proposed as an example and the related simulation results performed in MATLAB are illustrated. The simulation results show that the proposed modulator achieves a dynamic range of 67 dB over 30 MHz with the loop filter of order 2. The proposed TDC-based sigma-delta modulator shows the superiority of the time quantization approach in designing the wideband and less complex continuous-time SDMs.
کلیدواژه‌ها
Sigma-delta modulator؛ TDC؛ Time-based circuits؛ VCO
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