Research and teaching interests

CMOS Analog IC Design, ASICs for bio-signal measurement, Neuromorphic VLSI circuits, Low-power and low-noise IC design, Instrumentation, Sensors and transducers.

Contact

  • Office: 212, J C Bose, IIT Ropar, Rupnagar - 140001, Punjab, India.
  • Office phone: +91 188 123 2211
  • Email: devarshi.das@iitrpr.ac.in

Devarshi Das
About me

I am an Assistant Professor in the Department of Electrical Engineering at the Indian Institute of Technology (IIT) Ropar, India. I have received an M.Tech degree from IIT Delhi in 2010 and a Ph.D. degree from IIT Bombay in 2017. My Ph.D. thesis focused on the design and development of low-power and low-noise analog signal conditioning integrated circuits. From 2010 to 2012, I worked as a Design Engineer in the Advanced Technology Organisation (ATO) lab of General Electric (GE). From 2017 to 2018, I worked as a Lead Research Engineer in the Corporate Technology (CT) group of Siemens. My research interest is multidisciplinary, which includes CMOS integrated circuit design, neuromorphic electronics, electronic system design for high precision instrumentation, bio-medical instrumentation, sensors and transducers. I have published more than ten journal/conference papers as author/co-author and have filed for several patents. I was awarded the IEEE ISCAS 2017 International Student Travel Grant Award. I am a senior member of IEEE and also an active reviewer for many reputed journals, including IEEE Trans. on Circuits and Systems - 1, IEEE Trans. on Neural Networks and Learning Systems, IEEE Trans. on Biomedical Circuits and Systems, IEEE Trans. on Instrumentation and Measurements, IEEE Sensors Journal, Elsevier Microelectronics Journal, IET Electronics Letters and others.

Academic background
  1. Ph.D., Indian Institute of Technology Bombay (IIT-B), Mumbai, India (2012-17)
  2. M.Tech., Indian Institute of Technology Delhi (IIT-D), New Delhi, India (2008-10)
  3. B.E., Faculty of Technology, DDU, Nadiad, India (2002-06)
Work experience
  1. IIT Ropar, Assistant Professor, 2018 - onwards
  2. Siemens, Lead Research Engineer, 2017-18
  3. General Electric, Design Engineer, 2010-12

Courses offered

  1. EE533 - CMOS Analog VLSI Design (Autumn 2020)
  2. EE 537 - Circuits Simulation Lab (Autumn 2020)
  3. EE 209 - Circuit Theory (Spring 2020)
  4. GE 108 - Basic Electronics Lab (Spring 2020)
  5. EE533 - CMOS Analog VLSI Design (Autumn 2019)
  6. EE 537 - Circuits Simulation Lab (Autumn 2019)
  7. EEP 206 - Digital Electronics Lab (Autumn 2019)
  8. EEL 323 - Measurements and Instrumentation (Spring 2019)
  9. GE 108 - Basic Electronics Lab (Spring 2019)
  10. EEP 206 - Digital Electronics Lab (Autumn 2018)
  11. GE 108 - Basic Electronics Lab (Autumn 2018)

Current Ph.D. scholars

  1. Shivdeep
  2. R. K. Srivastava (Co-guide: Dr. Z. A. Khan, Semi-Conductor Laboratory (SCL), Mohali)
  3. Kanupriya Varshney (Guide: Dr. Brajesh Rawat)
  4. M. A. Saeed (Co-guide: Dr. B. Umapathi, Semi-Conductor Laboratory (SCL), Mohali)
  5. Sahibia Kaur Vohra (Co-guide: Dr. Mahendra Sakare)
  6. Sherin A Thomas (Co-guide: Dr. Rohit Sharma)
  7. Mayank Kumar Singh (Guide: Dr. Mahendra Sakare)

Projects (as PI/Co-PI)

  1. IC-IMPACTS project (ongoing).
  2. 1 completed project funded by industry in 2019.

Publications

  1. Sahibia Kaur Vohra, Sherin A. Thomas, M. Sakare, D.M.Das, “Comments and corrections to "Analog Spike-Timing-Dependent Resistive Crossbar Design for Brain Inspired Computing", Submitted to IEEE Journal on Emerging and Selected Topics in Circuits and Systems. [Under review]
  2. D.M.Das, K. Barot, A. Srivastava and M. Shojaei Baghini, "Noise-power-area optimised design procedure for OTAs with complementary input transistors for neural amplifiers," in IET Circuits, Devices & Systems, vol. 14, no. 5, pp. 702-706, August 2020, doi: 10.1049/iet-cds.2019.0259.
  3. A. Karmakar, D.M.Das and M. Shojaei Baghini, "Adaptive analogue calibration technique to compensate electrode motion artefacts in biopotential recording," in IET Circuits, Devices & Systems, vol. 14, no. 3, pp. 327-332, May 2020, doi: 10.1049/iet-cds.2019.0409.
  4. D.M.Das, A. Vidwans, A. Srivastava, M. Ahmad, S. Vaishnav, S. Dewan and M. Shojaei Baghini, "Design and development of an Internet-of-Things enabled wearable ExG measuring system with a novel signal processing algorithm for electrocardiogram," in IET Circuits, Devices & Systems, vol. 13, no. 6, pp. 903-907, September 2019, doi: 10.1049/iet-cds.2018.5498.
  5. D.M.Das, A. Gupta, A. Vidwans, A. Srivastava, M. Ahmad, A. Shelke, S. Kale, J. Ananthapadmanabhan, D. K. Sharma and M. Shojaei Baghini, "A Pulse Oximeter System, OxiSense, with Embedded Signal Processing using an Ultra-low Power ASIC Designed for Testability", Elsevier Microelectronics Journal, December 2017.
  6. D.M.Das, A.Srivastava, J. Ananthapadmanabhan, M.Ahmad and M.Shojaei Baghini, "A novel low-noise fully differential CMOS instrumentation amplifier with 1.88 noise efficiency factor for biomedical and sensor applications", Elsevier Microelectronics Journal, July 2016. (One of the most downloaded papers in 2016)
  7. A. Srivastava, D.M.Das, P. Mathur, D. K. Sharma and M. Shojaei Baghini, "0.43 nJ/bit OOK Transmitter for Wearable and Implantable Devices in 400 MHz MedRadio Band", IEEE Microwave and Wireless Components Letters, 2018.
  8. A. Srivastava, N. Sankar K., B. Chatterjee, D.M.Das, M. Ahmad, Rakesh K. K., V. Saraf, J. Ananthapadmanabhan, D. K. Sharma, and M. Shojaei Baghini, "Bio-WiTel: A Low Power Integrated Wireless Telemetry System for Healthcare Applications in 401-406 MHz Band of MedRadio Spectrum", IEEE Journal of Biomedical and Health Informatics,December 2016.
  9. B. Chatterjee, N. Modak, Anvesha A, D. Mistry, D.M.Das and M. Shojaei Baghini, "A sub-1V, 120 nW, PVT-variation Tolerant, Tunable and Scalable Voltage Reference with 60 dB PSNA", IEEE Transactions on Nanotechnology, January 2017.
  10. D.M.Das, A. Srivastava, A. Gupta, K. Barot and M. Shojaei Baghini, "A Noise-power-area Optimized Novel Programmable Gain and Bandwidth Instrumentation Amplifier for Biomedical Applications", Proc. of IEEE ISCAS, 2017, USA.
  11. D.M.Das, J. Ananthapadmanabhan and M.Shojaei Baghini, "Design Considerations for High-CMRR Low- Power Current Mode Instrumentation Amplifier for Biomedical Data Acquisition Systems", Proc. of IEEE ICECS, 2014, France.
  12. S. Boyapati, D.M.Das, M. Shojaei Baghini and J. M. Redoute, "A Balanced CMOS OpAmp with High EMI Immunity", Proc. of IEEE EMC Europe, 2014, Sweden.
  13. A. Srivastava, N. Sankar, D.M.Das and M. Shojaei Baghini, "LNA-LO Co-Design Considerations For Low Intermediate Frequency Receivers In 401-406 MHz MedRadio Spectrum For Healthcare Applications", International Conf. on VLSI Design, 2017, India.
  14. A. Srivastava, D.M.Das, Vignesh M S, Bharadwaj K., Sourya Dewan and Maryam Shojaei Baghini, "Bio-Telemetry And Bio-Instrumentation Technologies For Health Care Monitoring Systems", IEEE Humanitarian Technology Conf. (HTC), 2016, India.
  15. A.Srivastava, D.M.Das, D.K.Sharma and M.Shojaei Baghini, "SAW Resonator Oscillator Based Injection Locked OOK Transmitter for MedRadio Spectrum" in IEEE NEWCAS, Canada, Jun. 2016.
  16. P.Kimtee, D.M.Das and M.Shojaei Baghini, "A Mismatch Insensitive Reconfigurable Discrete Time Biosignal Conditioning Circuit in 180 nm MM CMOS Technology" in IEEE VDAT, India, May 2016.
  17. A. Srivastava, N. Sankar K, Rakesh K K, B. Chatterjee, D.M.Das and M. Shojaei Baghini, "Design And Measurement Techniques For A Low Noise Amplifier In A Receiver Chain For MedRadio Spectrum" in IEEE VDAT, India, May 2016.
Patents
  1. Inventor in a patent filed on Ultra low noise instrumentation amplifier.
  2. Co-inventor in a patent filed on handheld pulse oximeter recording and analysis system.
  3. Co-inventor in a patent filed on a novel method for comparator input offset compensation.
  4. Co-inventor in a patent filed on a design method for low-power low-noise bio-medical signal conditioning circuit with extracted noise and mis-match parameters.
  5. Co-inventor in a patent filed on voltage mode log domain low-pass filter.
  6. Co-inventor in a patent filed on SAW resonator oscillator based injection locked OOK transmitter for health care applications in MedRadio spectrum (401-406 MHz).
  7. Co-inventor in a patent filed on design considerations for transmitter and receiver for personal health care applications.

Technical/Administrative activities

  1. Invited TPC member (Track: Nanoelectronic VLSI and Sensor Systems), IEEE-iSES 2019, IEEE-iSES 2020
  2. CBME MedTech Workshop, IIT Ropar, 2019, Evaluation panel member
  3. Faculty advisor: 1) EE 2019 UG batch; 2) M.Tech (VLSI) 2020 batch
  4. Reviewer: IEEE Trans. Circuits and Systems - 1, IEEE Trans. on Instrumentation and Measurements, IEEE Trans. on Neural Networks and Learning Systems, IEEE Trans. on Biomedical Circuits and Systems, IEEE Systems Journal, Elsevier Microelectronics Journal, Elsevier Sensors and Actuators, and others.
Invited Talks
  1. ReAp@CVEST-2020, 1-day workshop at IIIT Hyderabad (Oct., 2020)
  2. APJ Abdul Kalam Faculty Lecture Series at IIT Ropar (Oct., 2020)
Awards and Honors
  1. 2019 IEEE Trans. on Instrumentation and Measurements Outstanding Reviewer. (Feb. 2020)
  2. IEEE ISCAS 2017 - Student Travel Grant. (May 2017)
  3. SERB International Travel Support (ITS). (May 2017)
  4. TCS fellowship through VLSI Design Lab, IIT Bombay. (September 2016 - May 2017)
  5. Research sponsorship from Ministry of Electronics and Information Technology(MeitY), Govt. of India. (July 2012- August 2016)
  6. Scholarship from Ministry of Human Resource Development (MHRD), Govt. of India for post-graduate studies. (2008-2010)

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