Integrated Circuits and Systems group, IIT Madras

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- publications:start [2022/08/23 14:51] nitin [2015]
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+ publications:start [2024/12/28 03:09] (current) nagendra
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 ====== Publications ======
 
 ===== 2024 =====
   * C. Bheemisetti et al. "A 7-bit 1.75-GS/s 6.9-fJ/​conv.-step FoMw Loop-Unrolled Fully Asynchronous SAR ADC in 3-nm CMOS for a 224-Gb/s SerDes Receiver."​ IEEE Journal of Solid-State Circuits, [[https://​ieeexplore.ieee.org/​document/​10723273|doi:​ 10.1109/​JSSC.2024.3449115]].
   * Aswani Kumar Unnam, P. Banerjee and N. Krishnapura,​ "An 81.5dB SNDR, 2.5 MHz Bandwidth Incremental Continuous-Time Delta-Sigma ADC in 180 nm CMOS," IEEE Solid-State Circuits Letters, vol. 7, pp. 191-194, 2024. [[https://​ieeexplore.ieee.org/​abstract/​document/​10552799|doi:​ 10.1109/​LSSC.2024.3412634]].
   * A. Narayanan, A. Bhat and N. Krishnapura,​ "A 6 to 12-GHz Fractional-N Frequency Synthesizer With a Digital Technique to Counter Modulus-Dependent Feedback Divider Delays,"​ IEEE Journal of Solid-State Circuits, vol. 59, no. 9, pp. 2818-2830, Sept. 2024. [[https://​ieeexplore.ieee.org/​document/​10471881|doi:​ 10.1109/​JSSC.2024.3373620.]]
 
 ===== 2023 =====
   * P. Kumar and N. Krishnapura,​ "​Signal-Strength Detector Based on CMOS-Inverter Supply Current,"​ //IEEE Solid-State Circuits Letters//, [[https://​ieeexplore.ieee.org/​document/​10226425|doi:​ 10.1109/​LSSC.2023.3307361]].
   * Subha Sarkar, Rajat Agarwal, Nagendra Krishnapura,​ "​Bandpass filter and oscillator ICs with THD < -140dBc at 10Vppd for testing high-resolution ADCs," //2023 International Solid-State Circuits Conference//,​ San Francisco, USA, Feb. 2023. Accepted for presentation. [[https://​ieeexplore.ieee.org/​document/​10067771|doi:​ 10.1109/​ISSCC42615.2023.10067771]].
   * S. Ramprasath, M. Madhusudan et al., "A Generalized Methodology for Well Island Generation and Well-Tap Insertion in Analog/​Mixed-Signal Layouts,"​ //ACM Transactions on Design Automation of Electronic Systems//, [[https://​dl.acm.org/​doi/​10.1145/​3580477|doi:​ 10.1145/​3580477]].
   * J. Poojary, S. Ramprasath et al., "​Exploration of Design / Layout Tradeoffs for RF Circuits using ALIGN,"​ // IEEE Radio Frequency Integrated Circuits Symposium (RFIC)//, San Diego, USA, June 2023. [[https://​doi.org/​10.1109/​RFIC54547.2023.10186141|doi:​ 10.1109/​RFIC54547.2023.10186141]].
 
 ===== 2022 =====
   * R. S. A. Kumar, N. Krishnapura and P. Banerjee, "​Analysis and Design of a Discrete-Time Delta-Sigma Modulator Using a Cascoded Floating-Inverter-Based Dynamic Amplifier,"​ //IEEE Journal of Solid-State Circuits//, vol. 57, no. 11, pp. 3384-3395, Nov. 2022, [[https://​ieeexplore.ieee.org/​document/​9777856|doi:​ 10.1109/​JSSC.2022.3171790.]]
   * K. M. Vithagan, V. Sundaresha and J. Viraraghavan,​ "​Geometric Programming Approach to Glitch Minimization via Gate Sizing,"​ in IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2022, doi: 10.1109/​TCAD.2022.3207970.
   * A. F. Davidson and J. Viraraghavan,​ "​Layout-Based Digital IC Course Projects in Large Classes: Implementation,​ Evaluation, and Plagiarism Detection,"​ in IEEE Transactions on Education, 2022, doi: 10.1109/​TE.2022.3192624. ​
   * S. Ramprasath, M. Madhusudan et al., "​Analog/​Mixed-Signal Layout Optimization using Optimal Well Taps," //​International Symposium on Physical Design//, Virtual Event Canada, Apr. 2022. [[https://​dl.acm.org/​doi/​10.1145/​3505170.3506728|doi:​ 10.1145/​3505170.3506728]]
   * T. Dhar, S. Ramprasath et al., "A Charge Flow Formulation for Guiding Analog/​Mixed-Signal Placement,"​ //Design, Automation & Test in Europe Conference & Exhibition (DATE)//, Antwerp, Belgium, Mar. 2022. [[https://​doi.org/​10.23919/​DATE54114.2022.9774621|doi:​ 10.23919/​DATE54114.2022.9774621]]
  
 ===== 2021 =====
   * R. S. A. Kumar, N. Krishnapura and P. Banerjee, "​Analysis and Design of a Discrete-Time Delta-Sigma Modulator Using a Cascoded Floating-Inverter-Based Dynamic Amplifier,"​ //IEEE Journal of Solid-State Circuits//. Early access.
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   * S. Guddanti and Q. A. Khan, "A High Efficiency Fast Transient Zero Output Ripple Buck Converter Using Split PWM Controller with Inductor Mismatch Compensation,"​ //2021 IEEE International Symposium on Circuits and Systems (ISCAS)//, 2021.
   * A. Chitnis, R. Chauhan, D. Kaur and Q. Khan, "A 0.75-5V, 15.8 nA with 1.8 μs Delay Supply Voltage Supervisor using Adaptively Biased Comparator and Sample & Hold Technique for IoT," //2021 IEEE Custom Integrated Circuits Conference (CICC)//, 2021.
   * A. Nallathambi,​ S. Sen, A. Raghunathan,​ N. Chandrachoodan,​ “Probabilistic spike propagation for efficient hardware implementation of spiking neural networks”,​ Frontiers in Neuroscience,​ vol 15, 2021
   * B. N. G. Koneru, N. Chandrachoodan and V. Vasudevan, "A Smoothed LASSO-Based DNN Sparsification Technique,"​ in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 68, no. 10, pp. 4287-4298, Oct. 2021
   * B. Vijayakumar and J. Viraraghavan,​ "An Area-Efficient Word-Line Pitch-Aligned 8T SRAM Compatible Digital-to-Analog Converter,"​ 2021 IEEE International Symposium on Circuits and Systems (ISCAS), 2021, pp. 1-5, doi: 10.1109/​ISCAS51556.2021.9401131. (Accepted for poster)
 
 ===== 2020 =====
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   * A. D. Carmine, A. Santra, Q. Khan, "A current Efficient 10mA Analog-Assisted Digital Low Dropout Regulator with Dynamic Clock Frequency in 65nm CMOS," //2020 International Symposium on Circuits and Systems (ISCAS)//, 17-20 May 2020, Seville, Spain. (Accepted for poster presentation).
   * K. Peetala, A. Ranjan, R. Aenkamreddi,​ Q. Khan, "An Area Efficient, High-Resolution Fully Foldable Switched-Capacitor DC-DC Converter with 16% Efficiency Improvement,"​ //2020 International Symposium on Circuits and Systems (ISCAS)//, 17-20 May 2020, Seville, Spain. (Accepted for poster presentation).
   * S. A. Balagopal and J. Viraraghavan,​ "Flash Based In-Memory Multiply-Accumulate Realisation:​ A Theoretical Study,"​ 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain, 2020, pp. 1-5, doi: 10.1109/​ISCAS45731.2020.9180925. (Accepted for poster)
   * M. V. Praveen and N. Krishnapura,​ "High Linearity Transmit Power Mixers Using Baseband Current Feedback,"​ //IEEE Journal of Solid-State Circuits//, vol. 55, no. 2, pp. 272-281, Feb. 2020. [[https://​ieeexplore.ieee.org/​document/​8889460|doi:​ 10.1109/​JSSC.2019.2945962]]
   * A.Baluni and S.Pavan, "A 20 MHz Bandwidth Continuous-Time Delta-Sigma ADC Achieving 82.1 dB SNDR and >100 dB SFDR Using a Time-Interleaved Virtual-Ground-Switched FIR Feedback DAC," // IEEE Custom Integrated Circuits Conference (CICC)//, March 2020. **(Outstanding Student Paper Award)**
   * H.Shibata,​G.Taylor,​..,​and S.Pavan, "An 800MHz-BW VCO-Based Continuous-Time Pipelined ADC with Inherent Anti-Aliasing and On-Chip Digital Reconstruction Filter,"​ //IEEE International Solid State Circuits Conference (ISSCC)//, February 2020.
   * S Panchapakesan,​ Z Fang, N Chandrachoodan,​ “EASpiNN: Effective Automated Spiking Neural Network Evaluation on FPGA”, IEEE 28th Intl. Symp. on Field-Programmable Custom Computing Machines (FCCM), 2020
   * G Mitra, P K Vairam, Patanjali S., N Chandrachoodan,​ V Kamakoti, “Depending on HTTP/2 for Privacy? Good Luck!”, 50th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), 2020
   * S Rangachari, N Chandrachoodan,​ “Energy Reduction in Turbo Decoding through Dynamically Varying Bit- Widths”, International Symposium on Circuits and Systems (ISCAS), 2020
   * G Vadakkeveedu,​ K Veezhinathan,​ N Chandrachoodan,​ S Potluri, “Scalable pseudo-exhaustive methodology for testing and diagnosis in flow-based microfluidic biochips”,​ IET Comp. & Dig. Techniques 14 (3), 122-131, 2020
   * C Dharmaraj, V Vasudevan, N Chandrachoodan,​ “Optimization of Signal Processing Applications Using Parameterized Error Models for Approximate Adders”, ACM Transactions on Embedded Computing Systems (TECS) 20 (2), 1-25, 2020
   * C Dharmaraj, V Vasudevan, N Chandrachoodan,​ “Analysis of power–accuracy trade‐off in digital signal processing applications using low‐power approximate adders”, IET Computers & Digital Techniques 15 (2), 97- 111, 2020
 
 
 
 ===== 2019 =====
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   * Abirmoya Santra and Qadeer A. Khan, "A Power Efficient Output Capacitor-Less LDO Regulator with Auto-Low Power Mode and Using Feed-forward Compensation,"​ //2019 32nd International Conference on VLSI Design and 2019 18th International Conference on Embedded Systems (VLSID)//, Delhi, NCR, India, 2019, pp. 36-40. [[https://​ieeexplore.ieee.org/​document/​8711084|doi:​ 10.1109/​VLSID.2019.00025]]
   *  B. Xiao et al., "An 80mA Capacitor-Less LDO with 6.5µA Quiescent Current and No Frequency Compensation Using Adaptive-Deadzone Ring Amplifier,"​ 2019 IEEE Asian Solid-State Circuits Conference (A-SSCC), 2019, pp. 39-42.
   * Shivani Bathla, Rahul M. Rao, Nitin Chandrachoodan,​ “A Simulation-Based Metric to Guide Glitch Power Reduction in Digital Circuits”,​ IEEE Trans. VLSI Syst. 27(2): 376-386 (2019)
 
 ===== 2018 =====
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   * Balaji Jayaraman, Derek Leu, Janakiraman Viraraghavan,​ Alberto Cestero, Ming Yin, John Golz, Rajesh R. Tummuru, Ramesh Raghavan, Dan Moy, Thejas Kempanna, Faraz Khan, Toshiaki Kirihata and Subramanian Iyer "80-kb Logic Embedded High-K Charge Trap Transistor-Based Multi-Time-Programmable Memory With No Added Process Complexity,"​ //IEEE Journal of Solid-State Circuits//, vol. 53, no. 3, pp. 949-960, March 2018. [[https://​ieeexplore.ieee.org/​document/​8252917|doi:​ 10.1109/​JSSC.2017.2784760]]
   * Q. A. Khan, S. Kim and P. K. Hanumolu, "​Time-Based PWM Controller for Fully Integrated High Speed Switching DC-DC Converters — An Alternative to Conventional Analog and Digital Controllers,"​ //2018 31st International Conference on VLSI Design and 2018 17th International Conference on Embedded Systems (VLSID)//, Pune, 2018, pp. 226-231. [[https://​ieeexplore.ieee.org/​document/​8326930|doi:​ 10.1109/​VLSID.2018.67]]
   * D. Celia, Vinita Vasudevan, Nitin Chandrachoodan,​ “Probabilistic Error Modeling for Two-part Segmented Approximate Adders”, Intl. Symp. On Circ & Systems (ISCAS) 2018.
   * Karthikeyan Natarajan, Nitin Chandrachoodan,​ “Lossless Parallel Implementation of a Turbo Decoder on GPU”, High Performance Computing (HiPC) 2018.
   * D. Celia, Vinita Vasudevan, Nitin Chandrachoodan,​ “Optimizing power-accuracy trade-offi in approximate adders”, Design, Automation, and Test in Europe (DATE) 2018.
 
 ===== 2017 =====
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   * Subhashish Mukherjee, Anoop Narayan Bhat, Kumar Anurag Shrivastava,​ Madhulatha Bonu, Benjamin Sutton, Jhankar Malakar, and Nagendra Krishnapura,​ "25.4 A 500Mb/s 200pJ/b die-to-die bidirectional link with 24kV surge isolation and 50kV/µs CMR using resonant inductive coupling in 0.18µm CMOS," //2017 IEEE International Solid-State Circuits Conference (ISSCC)//, San Francisco, CA, 2017, pp. 434-435. [[https://​ieeexplore.ieee.org/​document/​7870447|doi:​ 10.1109/​ISSCC.2017.7870447]]
   * R. S. Ashwin Kumar and Nagendra Krishnapura,​ "A Low Power Multi-channel Input Delta-Sigma ADC without Reset,"​ //2017 30th International Conference on VLSI Design and 2017 16th International Conference on Embedded Systems (VLSID)//, Hyderabad, 2017, pp. 9-14. [[https://​ieeexplore.ieee.org/​document/​7884750|doi:​ 10.1109/​VLSID.2017.85]]
   * Sundarrajan Rangachari, Jaiganesh Balakrishnan,​ Nitin Chandrachoodan,​ “Scenario-Aware Dynamic Power Reduction Using Bias Addition”,​ IEEE Transactions on VLSI Systems, vol. 25, no. 2, Feb 2017
 
 ===== 2016 =====
   * Abhishek Kumar, Sankaran Aniruddhan, and Radha Krishna Ganti, "An Asymmetric 2.4 GHz Directional Coupler Using Electrical Balance,"​ //IEEE Microwave and Wireless Components Letters//, vol. 26, no. 12, pp. 990-992, Dec. 2016. [[https://​ieeexplore.ieee.org/​document/​7737030|doi:​ 10.1109/​LMWC.2016.2623252]]
   * S. Potluri, A. S. Trinadh, S. Babu, V. Kamakoti and N. Chandrachoodan,​ “DFT Assisted Techniques for Peak Launch-to-Capture Power Reduction during Launch-on-Shift ​ At-Speed Testing”, ACM Transactions on Design Automation of Electronic Systems, vol. 21, no. 1, Nov 2015
   * Gaurav Agrawal, Sankaran Aniruddhan, and Radha Krishna Ganti, "A Compact Mixer-First Receiver With >24 dB Self-Interference Cancellation for Full-Duplex Radios,"​ //IEEE Microwave and Wireless Components Letters//, vol. 26, no. 12, pp. 1005-1007, Dec. 2016. [[https://​ieeexplore.ieee.org/​document/​7740043|doi:​ 10.1109/​LMWC.2016.2623253]]
   * Gregory Fredeman, Donald W. Plass, Abraham Mathews, Janakiraman Viraraghavan,​ Kenneth Reyer, Thomas J. Knips, Thomas Miller, Elizabeth L. Gerhard, Dinesh Kannambadi, Chris Paone, Dongho Lee, Daniel Rainey, Michael Sperling, Michael Whalen, Steven Burns, Rajesh Reddy Tummuru, Herbert Ho, Alberto Cestero, Norbert Arnold, Babar Khan, Toshiaki Kirihata and Subramanian S. Iyer, "A 14 nm 1.1 Mb Embedded DRAM Macro With 1 ns Access,"​ //IEEE Journal of Solid-State Circuits//, vol. 51, no. 1, pp. 230-239, Jan. 2016. [[https://​ieeexplore.ieee.org/​document/​7210238|doi:​ 10.1109/​JSSC.2015.2456873]]
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   * G. Shu, W. S. Choi, S. Saxena, T. Anand, A. Elshazly, and P. K. Hanumolu, "A 4-to-10.5 Gb/s Continuous-Rate Digital Clock and Data Recovery With Automatic Frequency Acquisition,"​ //IEEE Journal of Solid-State Circuits//, vol. 51, no. 2, pp. 428-439, Feb. 2016. [[https://​ieeexplore.ieee.org/​document/​7362125|doi:​ 10.1109/​JSSC.2015.2497963]]
   * G. Shu, W. S. Choi, S. Saxena, S. -J. Kim, M. Talegaonkar,​ R. Nandwana, and P. K. Hanumolu, "23.1 A 16Mb/​s-to-8Gb/​s 14.1-to-5.9pJ/​b source synchronous transceiver using DVFS and rapid on/off in 65nm CMOS," //2016 IEEE International Solid-State Circuits Conference (ISSCC)//, San Francisco, CA, 2016, pp. 398-399. [[https://​ieeexplore.ieee.org/​document/​7418075|doi:​ 10.1109/​ISSCC.2016.7418075]]
   * Celia Dharmaraj and Nitin Chandrachoodan,​ “Guided Multilevel Approximation of Less Significant Bits for Power Reduction”,​ Intl. Symposium on VLSI Design and Test (VDAT), 2016. 
   * Amit Salaskar, Nitin Chandrachoodan,​ “FFT/IFFT implementation using Vivado HLS”, Intl. Sym. On VLSI Des. & Test (VDAT) 2016.
 ===== 2015 =====
   * J. d. l. Rosa, K. Pun, R. Schreier, and S. Pavan, "​Next-Generation Delta-Sigma Converters: Trends and Perspectives,"​ //IEEE Journal on Emerging and Selected Topics in Circuits and Systems//, vol. 5, no. 4, pp. 484-499, Dec. 2015. [[https://​ieeexplore.ieee.org/​document/​7343753|doi:​ 10.1109/​JETCAS.2015.2502164]] ​  
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 ====== Patents ======
   * P. Yadav and S. Ramprasath, " Keep-through regions for handling end-of-line rules in routing,"​ US 11,586,796 B1, Feb. 21, 2023. [[https://​patents.google.com/​patent/​US11586796B1|US11586796B1]]
   * M. Bansal, M. McGowan, I. Mirea, Q. Khan, T. Stockstad, B. Walker and T. Sutton, "​Current measurments in switching regulators",​ US 9,755,518, September 5, 2017. [[https://​patents.google.com/​patent/​US9755518|US9755518B2]]
   * M. Bansal, Q. Khan and C. Shi, "​Average current mode control of multi-phase switching power converters,"​ US 9,442,140, Sep. 13, 2016. [[https://​patents.google.com/​patent/​JP6185194B2/​en|JP6185194B2]]