Research Interests

  • Data Converters
    • Time-Interleaved ADCs
    • Flash ADCs
    • Pipeline ADCs
    • Folding & Interpolating ADCs
    • Digitally-Assisted Architectures

  • Optimization
    • Semidefinite Programming
    • Circuit-oriented Geometric Programming

  • Decision Analysis
  • Investing

  • Hacking Life

Publications / Conferences


  • M. El-Chammas, "The hardware behind the algorithms: A look at energy-efficient transievers and accelerators," AUB Talks Semantic Communications, April 2024 (complete slides)

  • M. El-Chammas, "Panel: The Role of NVM, Emerging Memories and In-Memory Compute for Edge A1," TinyML Summit (Panel Discussion), Feb. 2020

  • M. El-Chammas, "Using Analog Computation in Flash Memory for Energy- efficient AI Inference," Design Automation Conference (DAC), June 2019

  • P. Venkatachala, A. El-Shater, Y. Xu, M. El-Chammas, and U. Moon, "Voltage domain correction technique for timing skew errors in time interleaved ADCs," IEEE Int. Symp. Circuits Syst. (ISCAS), May 2017

  • M. El-Chammas, "Design techniques for Multi-GS/s and High Performance Pipelined ADCs," ISSCC Dig. Tech. Papers, Forum 6, San Francisco, CA, Feb. 2017

  • M. El-Chammas et al., "A 90dB-SFDR 14b 500MS/s BiCMOS Switched-Current Pipelined ADC," ISSCC Dig. Tech. Papers, San Francisco, CA, Feb. 2015, pp. 286-287

  • M. El-Chammas et al., "A 12 bit 1.6 GS/s BiCMOS 2x2 Hierarchical Time-Interleaved Pipeline ADC," IEEE Journal for Solid State Circuits, vol. 49, no. 9, pp. 1876-1885 , Sept. 2014 (IEEExplore)

  • A. J. Redfern, M. El-Chammas, and L. Ding, "Signal Processing for Analog Systems," IEEE International Conference for Speech and Signal Processing (ICASSP), Florence, Italy, May 2014

  • M. El-Chammas et al., "A 12 bit 1.6 GS/s BiCMOS 2x2 Hierarchical Time-Interleaved Pipeline ADC," IEEE Bipolar Circuits and Technology Meeting, Bordeaux, France, October 2013 (IEEExplore) (Best Paper Award)

  • M. El-Chammas, "The World of Time-Interleaved ADCs: From Theory to Design," Tutorial in IEEE International NEWCAS Conf., Montreal, Canada, June 2012 (complete slides)

  • M. El-Chammas, "Time-Interleaved ADCs: Theory and Design," Tutorial in IEEE International Conf. on Elec., Circ., and Sys., Lebanon, December 2011 (handouts)

  • B. Murmann and M. El-Chammas, "Background Calibration of Timing Skew in Time-Interleaved A/D Converters," Inter. Conf. of Sampl. Th. (SAMPTA), Singapore, May 2011 (pdf)

  • M. El-Chammas and B. Murmann, "A 12-GS/s 81-mW 5-bit Time-Interleaved Flash ADC with Background Timing Skew Calibration," IEEE Journal of Solid-State Circuits, vol. 46, no. 4, pp. 838-847, April 2011 (IEEExplore)

  • R. Payne, C, Sestok, W. Bright, M. El-Chammas, M. Corsi, D. Smith, N. Tal, "A 12b 1GS/s SiGe BiCMOS Two-Way Time-Interleaved Pipeline ADC," in ISSCC Dig. Tech. Papers, San Francisco, CA, Feb. 2011 (IEEExplore)

  • M. El-Chammas, "Background Calibration of Timing Skew in Time-Interleaved A/D Converters," Ph.D. Thesis, Stanford University, August 2010 (online)

  • M. El-Chammas and B. Murmann, "A 12-GS/s 81-mW 5-bit Time-Interleaved Flash ADC with Background Timing Skew Calibration," VLSI Circuits Symposium, Honolulu, HI, June 2010 (IEEExplore)

  • M. El-Chammas and B. Murmann, "General Analysis on the Impact of Phase-Skew Mismatch in Time-Interleaved ADCs," IEEE Trans. on Circuits and Systems I, vol. 56, No. 5, pp. 902-910, May 2009 (IEEExplore)

  • M. El-Chammas and I. Al-Mojel, "Power Utility Function for Entrepreneurs," INFORMS, Oct. 2008

  • I. Al-Mojel and M. El-Chammas, "Value Discovery: Dynamic Decision Analysis," INFORMS, Oct. 2008

  • M. El-Chammas and B. Murmann, "General Analysis on the Impact of Phase-Skew Mismatch in Time-Interleaved ADCs," IEEE ISCAS, May 2008 (Finalist for Best Student Paper Award) (IEEExplore)

  • A. So, M. El-Chammas, and Y. Ye, "A Semidefinite Approach to Tensegrity Theory and Graph Realization," MOPTA 06, July 2006 (pdf)

  • M. El-Chammas, A. So, and Y. Ye, "Bounds for Stochastic Optimization," March 2006

  • M. El-Chammas, J. Dietrich, E. Gerlach, and K. Zimmermann, "Optimising the Trajectories of Various Modular Robot Configurations by employing Genetic Algorithms," 49 Inter. Wissenschaftliches Koll. T.U. Ilmenau, 27-30 September 2004, Ilmenau, Germany, 2004

  • M. El-Chammas, B. Khoury, A. Halaby, "Implementing Security in RFID Systems: The Tag Emulator," 3rd FEA Student Conference, Beirut, May 2004

Books

  • M. El-Chammas, "High-Performance and High-Speed Pipelined ADCs," Springer, 2023 (Overview)

  • M. El-Chammas and B. Murmann, "Background Calibration of Time-Interleaved Data Converters," Springer, 2012 (Overview)

Patents

  • "System and methods for mixed-signal computing", 2019 (Details)

  • "Mixed-Signal Circuitry For Computing Weighted Sum Computation", 2018 (Details)

  • "Track and hold with active charge cancellation", 2016 (Details)

  • "Analog to digital convertor error rate reduction", 2016 (Details)

  • "Common mode sampling mechanism for residue amplifier in switched current pipeline analog-to-digital converters", 2015 (Details)

  • "Background Calibration for Digital-to-Analog Converters", 2015 (Details)

  • "High speed dynamic comparator", 2014 (Details)

  • "Robust Encoder for Folding Analog to Digital Converter", 2012 (Details)