Search Results - "Lim, Jongyup"

A Self-Tuning IoT Processor Using Leakage-Ratio Measurement for Energy-Optimal Operation by Lee, Jeongsup, Miyoshi, Satoru, Kawaminami, Masaru, Blaauw, David, Sylvester, Dennis, Zhang, Yiqun, Dong, Qing, Lim, Wootaek, Saligane, Mehdi, Kim, Yejoong, Jeong, Seokhyeon, Lim, Jongyup, Yasuda, Makoto

“…Energy-optimal operation is one of the key requirements of the Internet-of-Things (IoT) applications to increase battery life. In this article, using a…”
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A 1Mb 28nm STT-MRAM with 2.8ns read access time at 1.2V VDD using single-cap offset-cancelled sense amplifier and in-situ self-write-termination by Qing Dong, Zhehong Wang, Jongyup Lim, Yiqun Zhang, Yi-Chun Shih, Yu-Der Chih, Chang, Jonathan, Blaauw, David, Sylvester, Dennis

“…1T1R spin-transfer-torque (STT) MRAM is a promising candidate for next-generation high-density embedded non-volatile memory [1-2]. However, 1T1R STT-MRAM…”
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Bridging the “Last Millimeter” Gap of Brain-Machine Interfaces via Near-Infrared Wireless Power Transfer and Data Communications by Moon, Eunseong, Barrow, Michael, Lim, Jongyup, Lee, Jungho, Nason, Samuel R, Costello, Joseph, Kim, Hun Seok, Chestek, Cynthia, Jang, Taekwang, Blaauw, David, Phillips, Jamie D

“…Arrays of floating neural sensors with a high channel count that covers an area of square centimeters and larger would be transformative for neural engineering…”
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17.2 A 142nW Voice and Acoustic Activity Detection Chip for mm-Scale Sensor Nodes Using Time-Interleaved Mixer-Based Frequency Scanning by Cho, Minchang, Oh, Sechang, Shi, Zhan, Lim, Jongyup, Kim, Yejoong, Jeong, Seokhyeon, Chen, Yu, Blaauw, David, Kim, Hun-Seok, Sylvester, Dennis

“…Acoustic sensing is one of the most widely used sensing modalities to intelligently assess the environment. In particular, ultra-low power (ULP) always-on…”
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A 510-pW 32-kHz Crystal Oscillator With High Energy-to-Noise-Ratio Pulse Injection by Xu, Li, Jang, Taekwang, Lim, Jongyup, Choo, Kyojin David, Blaauw, David, Sylvester, Dennis

“…This article introduces a 32-kHz crystal oscillator (XO) with high energy-to-noise-ratio pulse injection at subharmonic frequency. A T/4-delay clock slicer is…”
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An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Sense-and-Set Rectifier by Peng, Yimai, Choo, Kyojin D., Oh, Sechang, Lee, Inhee, Jang, Taekwang, Kim, Yejoong, Lim, Jongyup, Blaauw, David, Sylvester, Dennis

“…Piezoelectric energy harvesters (PEHs) are widely deployed in many self-sustaining systems, and proper rectifier circuits can significantly improve the energy…”
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A 224 PW 260 PPM/°C Gate-Leakage-Based Timer for Ultra-Low Power Sensor Nodes with Second-Order Temperature Dependency Cancellation by Jongyup Lim, Taekwang Jang, Saligane, Mehdi, Yasuda, Makoto, Miyoshi, Satoru, Kawaminami, Masaru, Blaauw, David, Sylvester, Dennis

“…A key challenge in the design of on-chip wake-up timers for compact wireless sensor nodes is to achieve high timing accuracy over temperature and supply…”
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An Acoustic Signal Processing Chip With 142-nW Voice Activity Detection Using Mixer-Based Sequential Frequency Scanning and Neural Network Classification by Oh, Sechang, Kim, Hun-Seok, Sylvester, Dennis, Cho, Minchang, Shi, Zhan, Lim, Jongyup, Kim, Yejoong, Jeong, Seokhyeon, Chen, Yu, Rothe, Rohit, Blaauw, David

“…This article presents a voice and acoustic activity detector that uses a mixer-based architecture and ultra-low-power neural network (NN)-based classifier. By…”
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Energy-Efficient Circuit Designs for Miniaturized Internet of Things and Wireless Neural Recording by Lim, Jongyup

“…Internet of Things (IoT) have become omnipresent over various territories including healthcare, smart building, agriculture, and environmental and industrial…”
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A 1-Mb 28-nm 1T1MTJ STT-MRAM With Single-Cap Offset-Cancelled Sense Amplifier and In Situ Self-Write-Termination by Dong, Qing, Wang, Zhehong, Lim, Jongyup, Zhang, Yiqun, Sinangil, Mahmut E., Shih, Yi-Chun, Chih, Yu-Der, Chang, Jonathan, Blaauw, David, Sylvester, Dennis

“…1T1MTJ spin-transfer-torque (STT)-MRAM is a promising candidate for next-generation high-density embedded non-volatile memory. This paper presents a 1-Mb 28-nm…”
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A Light-Tolerant Wireless Neural Recording IC for Motor Prediction With Near-Infrared-Based Power and Data Telemetry by Lim, Jongyup, Lee, Jungho, Moon, Eunseong, Barrow, Michael, Atzeni, Gabriele, Letner, Joseph G., Costello, Joseph T., Nason, Samuel R., Patel, Paras R., Sun, Yi, Patil, Parag G., Kim, Hun-Seok, Chestek, Cynthia A., Phillips, Jamie, Blaauw, David, Sylvester, Dennis, Jang, Taekwang

“…Miniaturized and wireless near-infrared (NIR)-based neural recorders with optical powering and data telemetry have been introduced as a promising approach for…”
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A Sub-mm 3 Wireless Neural Stimulator IC for Visual Cortical Prosthesis With Optical Power Harvesting and 7.5-kb/s Data Telemetry by Lee, Jungho, Letner, Joseph G., Lim, Jongyup, Atzeni, Gabriele, Liao, Jiawei, Kamboj, Abhilasha, Mani, Bhavika, Jeong, Seokhyeon, Kim, Yejoong, Sun, Yi, Koo, Beomseo, Richie, Julianna, Valle, Elena della, Patel, Paras R., Sylvester, Dennis, Kim, Hun-Seok, Jang, Taekwang, Phillips, Jamie D., Chestek, Cynthia A., Weiland, James, Blaauw, David

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A Sub-mm3 Wireless Neural Stimulator IC for Visual Cortical Prosthesis With Optical Power Harvesting and 7.5-kb/s Data Telemetry by Lee, Jungho, Letner, Joseph G., Lim, Jongyup, Atzeni, Gabriele, Liao, Jiawei, Kamboj, Abhilasha, Mani, Bhavika, Jeong, Seokhyeon, Kim, Yejoong, Sun, Yi, Koo, Beomseo, Richie, Julianna, Valle, Elena della, Patel, Paras R., Sylvester, Dennis, Kim, Hun-Seok, Jang, Taekwang, Phillips, Jamie D., Chestek, Cynthia A., Weiland, James, Blaauw, David

“…This article proposes StiMote, an untethered, free-floating and individually addressable stimulator mote designed for visual cortex stimulation, aimed at…”
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Dual-Junction GaAs Photovoltaics for Low Irradiance Wireless Power Transfer in Submillimeter-Scale Sensor Nodes by Moon, Eunseong, Barrow, Michael, Lim, Jongyup, Blaauw, David, Phillips, Jamie D.

“…Dual-junction GaAs photovoltaic (PV) cells and modules at submillimeter scale are demonstrated for efficient wireless power transfer for Internet of Things and…”
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A Power-Efficient Brain-Machine Interface System With a Sub-mw Feature Extraction and Decoding ASIC Demonstrated in Nonhuman Primates by An, Hyochan, Nason-Tomaszewski, Samuel R., Lim, Jongyup, Kwon, Kyumin, Willsey, Matthew S., Patil, Parag G., Kim, Hun-Seok, Sylvester, Dennis, Chestek, Cynthia A., Blaauw, David

“…Intracortical brain-machine interfaces have shown promise for restoring function to people with paralysis, but their translation to portable and implantable…”
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A 0.19×0.17mm 2 Wireless Neural Recording IC for Motor Prediction with Near-Infrared-Based Power and Data Telemetry by Lim, Jongyup, Moon, Eunseong, Barrow, Michael, Nason, Samuel R, Patel, Paras R, Patil, Parag G, Oh, Sechang, Lee, Inhee, Kim, Hun-Seok, Sylvester, Dennis, Blaauw, David, Chestek, Cynthia A, Phillips, Jamie, Jang, Taekwang

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27.2 An Adiabatic Sense and Set Rectifier for Improved Maximum-Power-Point Tracking in Piezoelectric Harvesting with 541% Energy Extraction Gain by Peng, Yimai, Choo, David Kyojin, Oh, Sechang, Lee, Inhee, Jang, Taekwang, Kim, Yejoong, Lim, Jongyup, Blaauw, David, Sylvester, Dennis

“…Piezoelectric energy harvesters (PEHs) convert mechanical energy from vibrations into electrical energy. They have become popular in energy-autonomous IoT…”
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3.3 A 0.51nW 32kHz Crystal Oscillator Achieving 2ppb Allan Deviation Floor Using High-Energy-to-Noise-Ratio Pulse Injection by Xu, Li, Jang, Taekwang, Lim, Jongyup, Choo, Kyojin, Blaauw, David, Sylvester, Dennis

“…In ultra-low-power crystal oscillators (XOs), the ideal circuit consumes minimum power while disturbing the oscillation as little as possible. In order to…”
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A 0.19×0.17mm2 Wireless Neural Recording IC for Motor Prediction with Near-Infrared-Based Power and Data Telemetry by Lim, Jongyup, Moon, Eunseong, Barrow, Michael, Nason, Samuel R, Patel, Paras R, Patil, Parag G, Oh, Sechang, Lee, Inhee, Kim, Hun-Seok, Sylvester, Dennis, Blaauw, David, Chestek, Cynthia A, Phillips, Jamie, Jang, Taekwang

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A Noise-Efficient Neural Recording Amplifier Using Discrete-Time Parametric Amplification by Jang, Taekwang, Lim, Jongyup, Choo, Kyojin, Nason, Samuel, Lee, Jeongsup, Oh, Sechang, Chestek, Cynthia, Sylvester, Dennis, Blaauw, David

“…This letter proposes an instrumentation amplifier for neural recording applications whose measured noise efficiency factor (NEF) is 2.2. A discrete-time…”
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