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Design of 3-Bit and 4-Bit Flash ADC with Low Power and High Efficiency Using Vivado


Authors : M. Venkatasai Ashwinmitra

Volume/Issue : Volume 11 - 2026, Issue 6 - June


Google Scholar : https://tinyurl.com/4fd9hsxj

Scribd : https://tinyurl.com/ybncj8dr

DOI : https://doi.org/10.38124/ijisrt/26jun2006

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.


Abstract : This paper presents the design and implementation of a Low power and efficient Flash ADC. Several comparators and encoders were developed (AND/OR/XNOR/NOT, XOR, NAND/NOR, and inverter-based), integrated into full Flash ADCs, and their dynamic power, static power, and propagation delay measured A Flash ADC uses a parallel comparator network and a priority encoder for conversion of analog to signals into a digital output. This is achieved in a single clock cycle. In this work, both 3-bit and 4-bit Flash ADCs has been implemented in Vivado using different logic gate combinations to evaluate performance metrics such as dynamic power, static power, and propagation delay. The Flash ADC using NAND-NOR gates encoder and an inverter has used the least power in both 3-bit and 4-bit

Keywords : Flash ADC, Comparator, Encoder, Verilog, Power Analysis, Dynamic Power, Static Power, Delay.

References :

  1. L. Koutanali, S. S. Kotabagi, R. Vernekar, V. D. Chitragar and P. Sangalad, "3-bit Flash ADC Using TIQ Comparator," 2024 5th International Conference for Emerging Technology (INCET), Belgaum, India, 2024, pp. 1-6.
  2. A. Sadath and Deepa, "Design and Implementation of Low Power-Novel Encoder Based Flash ADC," 2023 International Conference on Smart Systems for applications in Electrical Sciences (ICSSES), Tumakuru, India, 2023, pp. 1-6,
  3. Andrew Selasi Agbemenu, Ernest Ofosu, Benjamin Kommey A 3-bit 10-mbps low power CMOS flash ADC.  Communications on Applied Electronics (CAE) - ISSN : 2394 – 4714 Foundation of Computer Science FCS, New York, USA Volume 7 - No. 22, November 2018
  4. Kriti Thakur, Sandeep Kaur Kingra “Design and Implementation of Hybrid 4-bit Flash ADC” in Intl. Conference on Advances in Computing, Communications and Informatics (ICACCI), Sept. 21-24, 2016, Jaipur, India.
  5. Glyny George, A. V. Jos Prakash, “Design of ultralow voltage high speed flash ADC in 45nm CMOS Technology”, IEEE Conference on recent trends in electronics, Information &communication technology, 2018.
  6. M. Pavan Kumar , P. Venkatesh , K. Venkatesh , G. Chanakya, S. Ravi Teja, 2020, Design and Implementation of Efficient Flash ADC, International Journal Of Engineering Research & Technology (IJERT) Volume 09, Issue 05 (May 2020).
  7. N. Agrawal and R. Paily. An improved rom architecture for bubble error suppression in high-speed flash adcs. In 2008 Annual IEEE Student Paper Conference, pages 1–5, Feb 2008.
  8. Mandal S. and Das, J. K. 2014. Design of 3-bit low power flash type ADC. International Journal of Advanced Research in Computer Engineering and Technology (IJARCET) vol. 3, no. 4.

This paper presents the design and implementation of a Low power and efficient Flash ADC. Several comparators and encoders were developed (AND/OR/XNOR/NOT, XOR, NAND/NOR, and inverter-based), integrated into full Flash ADCs, and their dynamic power, static power, and propagation delay measured A Flash ADC uses a parallel comparator network and a priority encoder for conversion of analog to signals into a digital output. This is achieved in a single clock cycle. In this work, both 3-bit and 4-bit Flash ADCs has been implemented in Vivado using different logic gate combinations to evaluate performance metrics such as dynamic power, static power, and propagation delay. The Flash ADC using NAND-NOR gates encoder and an inverter has used the least power in both 3-bit and 4-bit

Keywords : Flash ADC, Comparator, Encoder, Verilog, Power Analysis, Dynamic Power, Static Power, Delay.

Paper Submission Last Date
31 - July - 2026

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