Power Efficient ADC using VCO with Current Mode Logic and Power Gated MOSFETs

JAI SOWMIYA R , Dr M SANTHI

Voltage-Controlled-Oscillator (VCO), Analog-to-Digital Converter (ADC), Frequency to-Digital Converter (FDC), Dynamic Power Consumption, Static Power Reduction.

The increasing demand for power efficient Analog-to-Digital Converters (ADCs) has led to advancements in Voltage-Controlled Oscillator (VCO)-based ADCs. This work presents a VCO-based ADC with a current-starved architecture and power-gated MOSFETs to achieve significant power reduction while maintaining high precision. The design utilizes a seven-stage ring oscillator integrated with power-gating and MOS Current Mode Logic (MCML) techniques to minimize leakage and dynamic power losses. A Frequency-to-Digital Converter (FDC) processes the VCO’s frequency modulated output into a digital format, ensuring stability and accuracy. Simulations in Cadence Virtuoso using 45-nm CMOS technology reveals a 97.1% reduction in total power consumption, with dynamic power reduced from 255.3 µW to 26.87 µW (89.5% reduction) and static power reduced from 832.8 µW to 5.02 µW (99.4% reduction) compared to non-power-gated designs. These betterments make the designed configuration highly effective for IoT-enabled systems, low-power signal processing, battery-operated devices, wireless communication, biomedical monitoring, and portable healthcare technologies.

Published Paper   E-Certificate

"Power Efficient ADC using VCO with Current Mode Logic and Power Gated MOSFETs ", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.10, Issue 3, page no.b740-b746, March-2025, Available :https://ijsdr.org/papers/IJSDR2503197.pdf

Volume 10 Issue 3, March-2025

Pages : b740-b746

Paper Reg. ID: IJSDR_301227

Published Paper Id: IJSDR2503197

Downloads: 000162

Research Area: Science and Technology

Country: THANJAVUR, TAMILNADU, India

Published Paper PDF: https://ijsdr.org/papers/IJSDR2503197

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR2503197

DOI: http://doi.one/10.1729/Journal.44617

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJSDR(IJ Publication) Janvi Wave

This work is licensed under a Creative Commons Attribution 4.0 International License and The Open Definition