ISSCC 2021

2021

195 篇论文 · Wireline I/O (20) · RF & Wireless (18) · mm-Wave (17) · Digital Processors (16) · Data Converters (14)

ISSCC 2021 Session 18 Medical & Bio
An Integrated Thermal Actuation/Sensing Array with Stacked Oscillators for Efficient and Localized Heating of Magnetic Nanoparticles with Sub-Millimeter Spatial Resolution efficiency and loop gain. A smaller VGS reduces the conduction angle in the large-signal operation for better energy efficiency while compromising the loop gain at startup. With 0.5V VGS, the simulated efficiency is >45%, and the loop gain is >2.3 across the entire frequency tuning range.
Yingying Fan, Linlin Zhang, Qingbo Zhang, Gang Bao, Taiyun Chi, To characterize the performance of stacked oscillators,
the fourth row of the array and capacitively coupled to the oscillator outputs. The measured maximum RF swing is >19.5Vpp for the four-stacked oscillator and >26.5Vpp for the five-stacked oscillator from 1.44 to 1.95GHz
ISSCC 2021 Session 18 Medical & Bio
A Wireless Multimodality System-on-a-Chip with Time-Based Resolution Scaling Technique for Chronic Wound Monitoring
Shao-Yung Lu1, Siang-Sin Shan1, Shih-Che Kuo1, Cheng-Ze Shao1,
wounds (CWs) may last for weeks or even months. The process of CW healing relies on many highly regulated factors, such as C-reactive protein (CRP), uric acid (UA), and temperature, which require in-depth observations. R
Yung-Hua Yeh1, I-Te Lin1, Shu-Ping Lin2, Yu-Te Liao1 National Chiao Tu
ISSCC 2021 Session 19 Wireline I/O
Optical Phased-Array FMCW LiDAR with On-Chip Calibration
SungWon Chung, Makoto Nakai, Samer Idres, Yongwei Ni, Hossein Hashemi
Light detection and ranging (lidar) sensors provide high resolution and high accuracy for diverse applications such as autonomous vehicles and three-dimensional imagers. Over the past few years, there has been significan
University of Southern California, Los Angeles, CA
ISSCC 2021 Session 19 Wireline I/O
A Mechanically Flexible Implantable Neural Interface for Computational Imaging and Optogenetic Stimulation over 5.4×5.4mm2 FoV
Sajjad Moazeni*1,2, Eric H. Pollmann*1, Vivek Boominathan3, Filipe A. Cardoso1,
Jacob T. Robinson3, Ashok Veeraraghavan3, Kenneth L. Shepard1 Columbia University, New York, NY University of Washington, Seattle, WA 3 Rice University, Houston, TX 1 2 *Equally-Credited Authors (ECAs) The advent of gene
ISSCC 2021 Session 19 Wireline I/O
A MEMS-Based Dynamic Light Focusing System for Single-Cell Precision in Optogenetics
Cem Yalcin1, Nathan Tessema Ersumo1, George Bocchetti1,
Mohammad Meraj Ghanbari1, Nick Antipa1, Sina Faraji Alamouti1, Laura Waller1,2, Daniel Lopez3, Rikky Muller1,2 University of California, Berkeley, CA Chan Zuckerberg Biohub, San Francisco, CA 3 National Institute of Stan
ISSCC 2021 Session 2 mm-Wave
mm-Wave 5G Radios: Baseband to Waves
Ahmed Khalil1, Islam Eshrah1, Amr Elsherief1, Ahmed Mehana1,
Mohamed Abdalla1, Mohamed Mobarak1, John Kilpatrick2, Brian Hall2, Ahmed Ashry1, Hossam Fahmy1, Sherif Salim1, Russell Kernan2, Brian Herdeg2, Gary Sapia2, Mohamed El-Nozahi1, Mohamed Weheiba1, Mark D’Amato2, Christian B
ISSCC 2021 Session 2 mm-Wave
High-Performance and Small Form-Factor mm-Wave CMOS Radars for Automotive and Industrial Sensing in 76-to-81GHz and 57-to-64GHz Bands
Krishnanshu Dandu1, Sreekiran Samala1, Karan Bhatia1, Meysam Moallem1,
Karthik Subburaj2, Zeshan Ahmad1, Daniel Breen1, Sunhwan Jang1, Tim Davis1, Mayank Singh1, Shankar Ram2, Vashishth Dudhia2, Marc DeWilde1, Dheeraj Shetty2, John Samuel2, Zahir Parkar2, Cathy Chi1, Pilar Loya1, Zachary Cr
ISSCC 2021 Session 2 mm-Wave
SOLI: A Tiny Device for a New Human Machine Interface
Saverio Trotta1, Dave Weber2, Reinhard W. Jungmaier1, Ashutosh Baheti1,
Jaime Lien2, Dennis Noppeney1, Maryam Tabesh2, Christoph Rumpler1, Michael Aichner3, Siegfried Albel3, Jagjit Singh Bal4, Ivan Poupyrev2 Infineon Technologies, Neubiberg, Germany Google, Mountain View, CA 3 Infineon Tech
ISSCC 2021 Session 20 RF & Wireless
A 5.0-to-6.36GHz Wideband-Harmonic-Shaping VCO Achieving 196.9dBc/Hz Peak FoM and 90-to-180kHz 1/f3 PN Corner Without Harmonic Tuning
Hao Guo1, Yong Chen1, Pui-In Mak1, Rui P. Martins1,2
Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 Since 2001 [1], LC VCOs have been demonstrating significant improvements of figureof-merit (FoM) and 1/f3 phase noise (PN) corner [2-5] by exploring c
University of Macau, Macau, China
ISSCC 2021 Session 20 RF & Wireless
A 3.09-to-4.04GHz Distributed-Boosting and HarmonicImpedance-Expanding Multi-Core Oscillator with -138.9dBc/Hz at 1MHz Offset and 195.1dBc/Hz FoM
Yiyang Shu1, Huizhen Jenny Qian1, Xiang Gao2, Xun Luo1
Zhejiang University, Hangzhou, China 1 2 The rapid development of high-speed communication and radar systems has placed stringent requirements on the spectral purity of RF oscillators. Also, maximizing battery lifetime,
University of Electronic Science and Technology of China, Chengdu, Chi
ISSCC 2021 Session 20 AI / ML
A 60GHz 186.5dBc/Hz FoM Quad-Core Fundamental VCO Using Circular Triple-Coupled Transformer with No Mode Ambiguity in 65nm CMOS
Haikun Jia, Wei Deng, Pingda Guan, Zhihua Wang, Baoyong Chi
The recent development of the 5th-generation (5G) communication sytems has set increasingly strict requirements on the spectral purity of millimeter-wave (mm-wave) local oscillators (LO). Low phase noise is crucial to en
Tsinghua University, Beijing, China
ISSCC 2021 Session 21 RF & Wireless
A 1.125Gb/s 28mW 2m-Radio-Range IR-UWB CMOS Transceiver
Geunhaeng Lee1, Sanghwa Lee1, Ji-Hoon Kim2, Tae Wook Kim1
Ewha Womans University, Seoul, Korea 1 2 As the amount of information that wireless communication devices carry increases more than ever, the importance of data transmission speed and efficiency has drastically increased
Yonsei University, Seoul, Korea
ISSCC 2021 Session 21 RF & Wireless
A 3-to-10GHz 180pJ/b IEEE802.15.4z/4a IR-UWB Coherent Polar Transmitter in 28nm CMOS with Asynchronous Amplitude Pulse-Shaping and Injection-Locked Phase Modulation
Erwin Allebes, Gaurav Singh, Yuming He, Evgenii Tiurin, Paul Mateman,
Ming Ding, Johan Dijkhuis, Gert-Jan van Schaik, Elbert Bechthum, Johan van den Heuvel, Mohieddine El Soussi, Arjan Breeschoten, Hannu Korpela, Yao-Hong Liu, Christian Bachmann imec-Netherlands, Eindhoven, The Netherlands
ISSCC 2021 Session 21 RF & Wireless
A Fully Integrated 2.7µW -70.2dBm-Sensitivity Wake-Up
Receiver with Charge-Domain Analog Front-End,
-16.5dB-SIR, FEC and Cryptographic Checksum downconversion, charge summation, baseband amplification, and ADC without requiring static bias currents, driving-buffers, and level-shifting circuits at each interface, saving
ISSCC 2021 Session 21 RF & Wireless
A 0.75-to-1GHz Passive Wideband Noise-Cancelling 171µW Wake-Up RX and 440µW Primary RX FE with -86dBm/10kb/s Sensitivity, 35dB SIR and 3.8dB RX NF
Hayden Bialek1, Sohail Ahasan*2, Ali Binaie*2, Kamala Raghavan Sadagopan1,
Matthew L. Johnston1, Harish Krishnaswamy2, Arun Natarajan1 Oregon State University, Corvallis, OR Columbia University, New York, NY 1 2 *Equally-Credited Authors (ECAs) IoT transceiver deployments are envisioned to have
ISSCC 2021 Session 21 RF & Wireless
An Integrated 2.4GHz -91.5dBm-Sensitivity Within-Packet Duty-Cycled Wake-Up Receiver Achieving 2µW at 100ms Latency
Henry L. Bishop*, Anjana Dissanayake*, Steven M. Bowers, Benton H. Calhoun
*Equally-Credited Authors (ECAs) The Internet-of-Things (IoT) requires dense sensor networks with low-latency response from wireless devices that operate on severely limited power budgets. Integrated wakeup receivers (Wu
University of Virginia, Charlottesville, VA
ISSCC 2021 Session 22 mm-Wave
THz Prism: One-Shot Simultaneous Multi-Node Angular Localization Using Spectrum-to-Space Mapping with 360-to-400GHz Broadband Transceiver and Dual-Port Integrated Leaky-Wave Antennas
Hooman Saeidi*, Suresh Venkatesh*, Xuyang Lu, Kaushik Sengupta
*Equally-Credited Authors (ECAs) The spectrum above 100GHz is expected to spawn a generation of ultra-high-speed wireless links and intelligent sensing and imaging applications. They are meant to be supported through a h
Princeton University, Princeton, NJ
ISSCC 2021 Session 22 mm-Wave
A 300GHz-Band Phased-Array Transceiver Using Bi-Directional Outphasing and Hartley Architecture in 65nm CMOS
Ibrahim Abdo1, Carrel da Gomez1, Chun Wang1, Kota Hatano1, Qi Li1,
Chenxin Liu1, Kiyoshi Yanagisawa1, Ashbir Aviat Fadila1, Jian Pang1, Hiroshi Hamada2, Hideyuki Nosaka2, Atsushi Shirane1, Kenichi Okada1 Tokyo Institute of Technology, Tokyo, Japan NTT, Kanagawa, Japan 1 The LO phase gen
ISSCC 2021 Session 22 mm-Wave
A 0.42THz Coherent TX-RX System Achieving 10dBm EIRP and 27dB NF in 40nm CMOS for Phase-Contrast Imaging
Dragan Simic, Kaizhe Guo, Patrick Reynaert
The small wavelength and non-ionizing nature of EM waves in the THz spectrum make this frequency band attractive for high-resolution imaging applications. While amplitudebased THz imaging systems have already been demons
KU Leuven - MICAS, Leuven, Belgium
ISSCC 2021 Session 22 mm-Wave
A 250GHz Autodyne FMCW Radar in 55nm BiCMOS with Micrometer Range Resolution
S. M. Hossein Naghavi1, Saghar Seyedabbaszadehesfahlani1, Farzad Khoeini1,
systems have pushed the operation frequency to the terahertz range due to the shorter wavelength and larger available bandwidth [1-5]. However, the best-reported range resolution cannot go below 1.5mm with a 100GHz bandw
Andreia Cathelin2, Ehsan Afshari1 University of Michigan, Ann Arbor, M
ISSCC 2021 Session 23 AI / ML
270-to-300GHz Double-Balanced Parametric Upconverter Using Asymmetric MOS Varactors and a Power-SplittingTransformer Hybrid in 65nm CMOS
Zhiyu Chen1, Wooyeol Choi2, Kenneth O1
Oklahoma State University, Stillwater, OK 1 2 Wireless communication at ~300GHz is drawing attention due to its potential to support a high data-rate using the wide available bandwidth. Transmitters operating at ~300GHz
University of Texas, Dallas, TX
ISSCC 2021 Session 23 mm-Wave
A 436-to-467GHz Lens-Integrated Reconfigurable Radiating Source with Continuous 2D Steering and Multi-Beam Operations in 65nm CMOS
Hossein Jalili, Omeed Momeni
High-resolution and fast imaging/sensing at THz requires highly directive steerable beams for scanning the object. A coherent array of coupled sources could improve the radiated power but requires mechanical and slow sca
University of California, Davis, CA
ISSCC 2021 Session 23 mm-Wave
A 605GHz 0.84mW Harmonic Injection-Locked Receiver Achieving 2.3pW/√Hz NEP in 28nm CMOS
Ariane De Vroede, Patrick Reynaert
The use of THz signals for imaging and sensing, enabling numerous applications in object characterization, medical, security, and other fields, has gained large interest in recent years. Both THz transmitters and receive
KU Leuven - MICAS, Leuven, Belgium
ISSCC 2021 Session 24 Memory
A 6.2 GHz Single Ended Current Sense Amplifier (CSA) Based Compileable 8T SRAM in 7nm FinFET Technology
Alexander Fritsch1, Rajiv Joshi2, Sudipto Chakraborty2, Holger Wetter1,
Uma Srinivasan1, Matthew Hyde3, Otto Torreiter1, Michael Kugel1, Dan Radko3, Hyong Kim3, Daniel Friedman2 IBM, Boeblingen, Germany IBM Research, Yorktown Heights, NY 3 IBM, Poughkeepsie, NY 1 2 8T SRAM, using domino read
ISSCC 2021 Session 24 Memory
A 14nm-FinFET 1Mb Embedded 1T1R RRAM with a 0.022µm2 Cell Size Using Self-Adaptive Delayed Termination and MultiCell Reference
Jianguo Yang1,2, Xiaoyong Xue3, Xiaoxin Xu1, Qiao Wang1, Haijun Jiang2,
Lab, Hangzhou, China 3 Fudan University, Shanghai, China 1 2 High-density embedded nonvolatile memory (eNVM) at advanced technology nodes is still in great demand for SOC chips used in consumer electronics, self-driving
Jie Yu1, Danian Dong1, Feng Zhang1, Hangbing Lv1, Ming Liu1 Institute
ISSCC 2021 Session 24 Memory
A 3nm Gate-All-Around SRAM Featuring an Adaptive Dual-BL and an Adaptive Cell-Power Assist Circuit
Taejoong Song, Woojin Rim, Hoonki Kim, Keun Hwi Cho, Taeyeong Kim,
TaeJung Lee, Geumjong Bae, Dong-Won Kim, SD Kwon, Sanghoon Baek, Jonghoon Jung, Jongwook Kye, Hakchul Jung, Hyungtae Kim, Soon-Moon Jung, Jaehong Park Samsung Electronics, Hwaseong, Korea Advanced technologies help to im
ISSCC 2021 Session 24 Memory
A 5nm 5.7GHz@1.0V and 1.3GHz@0.5V 4kb Standard-CellBased Two-Port Register File with a 16T Bitcell with No Half-Selection Issue
Hidehiro Fujiwara, Yi-Hsin Nien, Chih-Yu Lin, Hsien-Yu Pan, Hao-Wen Hsu,
the minimum operating voltage (VMIN). Furthermore, fin formation differences between the SRAM bitcells, the peripheral circuits and the standard logic degrade area efficiency due to the empty spaces at fin-to-fin boundar
Shin-Rung Wu, Yao-Yi Liu, Yen-Huei Chen, Hung-Jen Liao, Jonathan Chang
ISSCC 2021 Session 25 Memory
A 24Gb/s/pin 8Gb GDDR6 with a Half-Rate Daisy-Chain-Based Clocking Architecture and IO Circuitry for Low-Noise Operation
Kyunghoon Kim, Joo-Hyung Chae, Jaehyeok Yang, Jihyo Kang, Gangsik Lee,
Sangyeon Byeon, Youngtaek Kim, Boram Kim, Dong-Hyun Kim, Yeongmuk Cho, Kangmoo Choi, Hyeongyeol Park , Junghwan Ji, Sera Jeong, Yongsuk Joo, Jaehoon Cha, Minsoo Park, Hongdeuk Kim, Sijun Park, Kyubong Kong, Sunho Kim, Sa
ISSCC 2021 Session 25 Memory
A 16Gb Sub-1V 7.14Gb/s/pin LPDDR5 SDRAM Applying a
Mosaic Architecture with a Short-Feedback 1-Tap DFE, an, FSS Bus with Low-Level Swing and an Adaptively Controlled
Body Biasing in a 3rd-Generation 10nm DRAM Yong-Hun Kim, Hyung-Jin Kim, Jaemin Choi, Min-Su Ahn, Dongkeon Lee, Seung-Hyun Cho, Dong-Yeon Park, Young-Jae Park, Min-Soo Jang, Yong-Jun Kim, Jinyong Choi, Sung-Woo Yoon, Jae-
ISSCC 2021 Session 25 Memory
An 8Gb GDDR6X DRAM Achieving 22Gb/s/pin with Single-Ended PAM4 Signaling
Timothy M. Hollis1, Ronny Schneider2, Martin Brox2, Thomas Hein2,
Wolfgang Spirkl2, Martin Bach2, Mani Balakrishnan2, Stefan Dietrich2, Fabien Funfrock2, Milena Ivanov2, Natalija Jovanovic2, Maksim Kuzmenka2, Daniel Lauber2, Juan Ocon-Garrido2, David Ovard1, Karl Pfefferl2, Sven Piatko
ISSCC 2021 Session 26 RF & Wireless
A 26-to-60GHz Continuous Coupler-Doherty Linear Power Amplifier for Over-An-Octave Back-Off Efficiency Enhancement
Tzu-Yuan Huang, Naga Sasikanth Mannem, Sensen Li, Doohwan Jung,
key enablers for 5G and beyond-5G wireless revolutions. To maximize the channel capacity, throughput, and frequency diversity, mm-wave wireless standards often mandate channels with GHz bandwidth (BW) over multiple non-c
Min-Yu Huang, Hua Wang Georgia Institute of Technology, Atlanta, GA It
ISSCC 2021 Session 26 RF & Wireless
A Doherty-Like Load-Modulated Balanced Power Amplifier Achieving 15.5dBm Average Pout and 20% Average PAE at a Data Rate of 18Gb/s in 28nm CMOS
Valdrin Qunaj, Patrick Reynaert
The continuous growth in demand for high-speed wireless connectivity is one of the main driving forces in the standardization and development of mm-wave systems. 5G new radio (NR) and also satellite communication with re
KU Leuven - MICAS, Leuven, Belgium
ISSCC 2021 Session 26 RF & Wireless
A mm-Wave Power Amplifier for 5G Communication Using a Dual-Drive Topology Exhibiting a Maximum PAE of 50% and Maximum DE of 60% at 30GHz
Edgar Felipe Garay, David Joseph Munzer, Hua Wang
The mm-wave spectrum is opening a new opportunity for TRx systems to operate at high-Gb/s data-rates. However, this opportunity is also imposing stringent requirements for power amplifiers (PAs) in terms of efficiency an
Georgia Institute of Technology, Atlanta, GA
ISSCC 2021 Session 26 RF & Wireless
A Reflection-Coefficient Sensor for 28GHz Beamforming Transmitters in 22nm FD-SOI CMOS
Yang Zhang, Giovanni Mangraviti, Johan Nguyen, Zhiwei Zong, Piet Wambacq
Millimeter-wave beamforming transmitters use antenna arrays to increase the EIRP by focusing the radiation pattern into a direction chosen by programming the TX phase shifters. However, under sharp scanning angles, the a
imec, Heverlee, Belgium
ISSCC 2021 Session 26 AI / ML
A Watt-Level Quadrature Switched/Floated-Capacitor Power Amplifier with Back-Off Efficiency Enhancement in Complex Domain Using Reconfigurable Self-Coupling Canceling Transformer
Bingzheng Yang, Huizhen Jenny Qian, Xun Luo
Modern wireless communication systems in portable devices require transmitters (TXs) with watt-level output power (Pout), high data-rate, and high efficiency, especially at power back-off (PBO) for enhanced average effic
University of Electronic Science and Technology of China, Chengdu, Chi
ISSCC 2021 Session 26 RF & Wireless
A 5-to-6GHz Current-Mode Subharmonic Switching Digital Power Amplifier for Enhancing Power Back-Off Efficiency
Aoyang Zhang, Ce Yang, Mostafa Ayesh, Mike Shuo-Wei Chen
Enhancing PA efficiency in the power back-off (PBO) region has become an important design objective due to the high peak-to-average power-ratio (PAPR) modulation in modern communications. Recently, a voltage-mode subharm
University of Southern California, Los Angeles, CA
ISSCC 2021 Session 26 RF & Wireless
An Impedance-Transforming N-Path Filter Offering Passive Voltage Gain
Mohammad Khorshidian, Harish Krishnaswamy
The four main passive circuit elements include the resistor, capacitor, inductor, and transformer. Inductors and transformers have been notoriously challenging to integrate in silicon, and they occupy a significant chip
Columbia University, New York, NY
ISSCC 2021 Session 27 Data Converters
A 250kHz-BW 93dB-SNDR 4th-Order Noise-Shaping SAR Using Capacitor Stacking and Dynamic Buffering
Jiaxin Liu1, Dengquan Li2, Yi Zhong1, Xiyuan Tang3, Nan Sun1,3
Xidian University, Xi’an, China 3 University of Texas, Austin, TX 1 2 The noise-shaping (NS) SAR is an emerging hybrid architecture that aims to combine the benefits of both SAR and ∆Σ ADCs [1-8]. The key in an NS SAR is
Tsinghua University, Beijing, China
ISSCC 2021 Session 27 Data Converters
-ENOB 184.9dB-FoM Capacitor-Array-Assisted Cascaded Charge-Injection SAR ADC
Kyojin Choo, Hyochan An, Dennis Sylvester, David Blaauw
IoT sensors are in rising demand and they often require low power, yet high precision measurements. Under constrained energy, Nyquist-rate SAR ADCs are typically used for readout as they are energy efficient and easy to
University of Michigan, Ann Arbor, MI
ISSCC 2021 Session 27 Data Converters
A 13.8-ENOB 0.4pF-CIN 3rd-Order Noise-Shaping SAR in a Single-Amplifier EF-CIFF Structure with Fully Dynamic Hardware-Reusing kT/C Noise Cancelation
Tzu-Han Wang, Ruowei Wu, Vasu Gupta, Shaolan Li
Noise-shaping SAR (NS-SAR) ADCs are attracting rising attention for their low-power high-resolution capability. In most recent arts, a substantial focus is placed on improving the loop filter design by using techniques s
Georgia Institute of Technology, Atlanta, GA
ISSCC 2021 Session 27 Data Converters
A 0.4-to-40MS/s 75.7dB-SNDR Fully Dynamic Event-Driven Pipelined ADC with 3-Stage Cascoded Floating Inverter Amplifier
Xiyuan Tang1, Xiangxing Yang1, Jiaxin Liu2, Wei Shi1, David Z. Pan1, Nan Sun1,2
Tsinghua University, Beijing, China 1 2 Many applications, such as multi-standard wireless and event-driven IoT devices, demand high-resolution ADCs with scalable sampling rate and power consumption. The conventional pip
University of Texas, Austin, TX
ISSCC 2021 Session 27 Data Converters
An 80MHz-BW 640MS/s Time-Interleaved Passive NoiseShaping SAR ADC in 22nm FDSOI Process
Chin-Yu Lin*, Ying-Zu Lin*, Chih-Hou Tsai, Chao-Hsin Lu
*Equally-Credited Authors (ECAs) Recently, both the number of smart devices and the amount of data transfered to and from these devices have grown at unprecedented rates. To provide users with a highquality experience, w
MediaTek, Hsinchu, Taiwan
ISSCC 2021 Session 27 Data Converters
A 25MHz-BW 75dB-SNDR Inherent Gain Error Tolerance Noise-Shaping SAR-Assisted Pipeline ADC with Background Offset Calibration
Hongshuai Zhang1, Yan Zhu1, Chi-Hang Chan1, R. P. Martins1,2
Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 To suppress the gain error from dynamic-power amplifiers, recently presented approaches including gain-error shaping (GES) [1], digital amplifiers [2]
University of Macau, Macau, China
ISSCC 2021 Session 27 Data Converters
A 79dB-SNDR 167dB-FoM Bandpass ΔΣ ADC Combining N-Path Filter with Noise-Shaping SAR Figure 27.7.3 shows the NS-SAR schematic and timing diagram. The LPF tracking and the SAR conversion take up 1/8 and 3/8 of a clock period, respectively. The rest is allocated for the residue amplification and integration.
Linxiao Shen1,2, Zijie Gao3, Xiangxing Yang2, Wei Shi2, Nan Sun2,3
For simplicity of design, this work uses top-plate sampling. To improve its linearity, 2 switches are used to disconnect CDAC from the nonlinear input capacitance of the comparator and the dynamic amplifier (DA) during t
ISSCC 2021 Session 28 Medical & Bio
A Distortion-Free VCO-Based Sensor-to-Digital Front-End Achieving 178.9dB FoM and 128dB SFDR with a CalibrationFree Differential Pulse-Code Modulation Technique
Jiannan Huang, Patrick P. Mercier
Motion and stimulation artifacts encountered in wearable sensors present difficult dynamic range (DR) and linearity challenges: AFEs need to be able to resolve μV-level signals in the presence of artifacts up to 100s of
University of California, San Diego, CA
ISSCC 2021 Session 28 Medical & Bio
A 400-to-1000nm 24µW Monolithic PPG Sensor with 0.3A/W Spectral Responsivity for Miniature Wearables
Sung-jin Jung, Jeil Ryu, Wanghyun Kim, Seunghoon Lee, Jongboo Kim,
Hyelim Park, Taeyoul Jang, Haedo Jeong, Juhwa Kim, Jeongho Park, Raeyoung Kim, Jeonghoon Park, HeeJae Jo, Whee Jin Kim, Jangbeom Yang, Bongjin Sohn, Yuncheol Han, Inchun Lim, Seoungjae Yoo, Changsoon Park, Dae-geun Jang,
ISSCC 2021 Session 28 Medical & Bio
A 28µW 134dB DR 2nd-Order Noise-Shaping Slope Light-to-Digital Converter for Chest PPG Monitoring 200µA. Since the DC-compensation information is available in the digital domain, the full-range signal can easily be reconstructed to derive the PI and blood oxygenation levels.
Qiuyang Lin1,2, Shuang Song1, Roland Van Wegberg3, Mario Konijnenburg3,
Dwaipayan Biswas1, Chris Van Hoof1,2, Filip Tavernier2, Nick Van Helleputte1 Figure 28.3.3 (right) shows the circuit implementation of the capacitor bank and the 3-T comparator within the NS loop. Since the input is a 10
ISSCC 2021 Session 28 Medical & Bio
A 400mVpp 92.3dB-SNDR 1kHz-BW 2nd-Order VCO-Based ExG-to-Digital Front-End Using a Multiphase Gated-Inverted Ring-Oscillator Quantizer
Corentin Pochet, Jiannan Huang, Patrick P. Mercier, Drew A. Hall
Next-generation wearable devices will enable clinical-grade, continuous ExG (ECG, EEG, EMG, etc.) biopotential monitoring, providing medical professionals with valuable longitudinal data outside of hospital settings. The
University of California, San Diego, CA
ISSCC 2021 Session 28 Medical & Bio
A 0.6V/0.9V 26.6-to-119.3µW ΔΣ-Based Bio-Impedance Readout IC with 101.9dB SNR and <0.1Hz 1/f Corner
Tantan Zhang*1, Hyunwoo Son*1, Yuan Gao1, Jingjing Lan1, Chun-Huat Heng2
National University of Singapore, Singapore 1 2 *Equally-Credited Authors (ECAs) Bio-impedance (BioZ) is an important physiological parameter in wearable healthcare sensing. Besides the inherent cardiac and respiratory i
Institute of Microelectronics, A*STAR, Singapore
ISSCC 2021 Session 28 Medical & Bio
A 22.6µW Biopotential Amplifier with Adaptive Common-Mode Interference Cancelation Achieving Total-CMRR of 104dB and CMI Tolerance of 15Vpp in 0.18µm CMOS
Nahmil Koo1, Hyojun Kim2, SeongHwan Cho1
Korea Aerospace Research Institute, Daejeon, Korea 1 2 Improving robustness to common-mode interference (CMI) is imperative for reliable two-electrode ECG recording. CMI degrades the signal quality in two ways. First, it
KAIST, Daejeon, Korea