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Browsing MIT Open Access Articles by Title

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  • A 0.077 to 0.168 nJ/bit/iteration Scalable 3GPP LTE Turbo Decoder with an Adaptive Sub-Block Parallel Scheme and an Embedded DVFS Engine 
    Cheng, Chih-Chi; Tsai, Yi-Min; Chen, Liang-Gee; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2010-09)
    3GPP LTE requires a 100 Mbps of peak bandwidth, and the instantaneous throughput demand changes with different applications. Fixed sub-block parallel turbo decoding scheme introduces bit-error rate (BER) performance drop ...
  • A 0.13[mu]m CMOS 78dB SNDR 87mW 20MHz BW CT [Delta Sigma] ADC with VCO-based integrator and quantizer 
    Park, Matthew (Institute of Electrical and Electronics Engineers, 2009-05)
    In this paper we demonstrate a new technique that eliminates the impact of K[subscript v] nonlinearity by preserving the integral relationship of the VCO output phase to the input signal. Leveraging the VCO output phase ...
  • A 0.16mm2 completely on-chip switched-capacitor DC-DC converter using digital capacitance modulation for LDO replacement in 45nm CMOS 
    Ramadass, Yogesh Kumar; Fayed, Ayman A.; Haroun, Baher; Chandrakasan, Anantha P. (Institute of Electrical and Electronic Engineers, 2010-02)
    A completely on-chip switched-capacitor DC-DC converter that occupies 0.16 mm2 [mm superscript 2] is implemented in a 45 nm CMOS process. The converter delivers 8 mA output current while maintaining load voltages from 0.8 ...
  • A 0.68V 0.68mW 2.4GHz PLL for ultra-low power RF systems 
    Paidimarri, Arun; Ickes, Nathan; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2015-05)
    A 2.4GHz PLL consuming 0.68mW has been implemented in 65nm LPCMOS for use in ultra-low power Bluetooth Low Energy (BLE) applications. VCO, charge pump and dynamic flip-flop design optimization allow low voltage operation ...
  • A 0.6V 2.9µW mixed-signal front-end for ECG monitoring 
    Yip, Marcus; Bohorquez, Jose L.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2012-06)
    This paper presents a mixed-signal ECG front-end that uses aggressive voltage scaling to maximize power-efficiency and facilitate integration with low-voltage DSPs. 50/60Hz interference is canceled using mixed-signal ...
  • A 0.6V, 8mW 3D Vision Processor for a Navigation Device for the Visually Impaired 
    Jeon, Dongsuk; Ickes, Nathan; Raina, Priyanka; Wang, Hsueh-Cheng; Rus, Daniela L.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2016-01)
    This paper presents an energy-efficient computer vision processor for a navigation device for the visually impaired. Utilizing a shared parallel datapath, out-of-order processing and co-optimization with hardware-oriented ...
  • A 0.7-V 1.8-mW H.264/AVC 720p Video Decoder 
    Finchelstein, Daniel Frederic; Sze, Vivienne; Sinangil, Mahmut Ersin; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2009-10)
    The H.264/AVC video coding standard can deliver high compression efficiency at a cost of increased complexity and power. The increasing popularity of video capture and playback on portable devices requires that the power ...
  • 100-W Q-switched Cryogenically Cooled Yb:YAG Laser 
    Hybl, John D.; Fan, Tso Yee; Ochoa, Juan R.; Ripin, Daniel J.; Rand, Darren A.; Manni, Jeffrey G. (Institute of Electrical and Electronics Engineers, 2009-12)
    This work describes a cryogenic, electro-optically Q-switched Yb:YAG laser that generates 114-W average TEM[subscript 00] power with 47% optical-to-optical efficiency. Pulse repetition frequency is 5 kHz, pulse duration ...
  • A +10dBm 2.4GHz Transmitter with sub-400pW Leakage and 43.7% System Efficiency 
    Paidimarri, Arun; Ickes, Nathan J.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2015-02)
    Extreme energy constraints inherent in many exciting new wireless sensing applications (such as [1-3]) virtually dictate that such systems operate with extremely low duty cycles, harvesting and storing energy over long ...
  • 10 Gbps TCP/IP streams from the FPGA for High Energy Physics 
    Bauer, Gerry P.; Lavinia Darlea, Georgiana; Gomez-Ceballos, Guillelmo; Paus, Christoph M. E.; Raginel, Olivier; Sumorok, Konstanty C.; Veverka, Jan (IOP Publishing, 2014-06)
    The DAQ system of the CMS experiment at CERN collects data from more than 600 custom detector Front-End Drivers (FEDs). During 2013 and 2014 the CMS DAQ system will undergo a major upgrade to address the obsolescence of ...
  • A 10-Gb/s Compact Low-Power Serial I/O With DFE-IIR Equalization in 65-nm CMOS 
    Kim, Byeong-Su; Liu, Yong; Dickson, Timothy O.; Bulzacchelli, John F.; Friedman, Daniel J. (Institute of Electrical and Electronics Engineers, 2009-12)
    A compact and power-efficient serial I/O targeting dense silicon carrier interconnects is reported. Based on expected channel characteristics, the proposed I/O features low-impedance transmitter termination, high-impedance ...
  • A 10Gb/s compact low-power serial I/O with DFE-IIR equalization in 65nm CMOS 
    Kim, Byungsub; Dickson, Timothy O.; Liu, Yong; Bulzacchelli, John F.; Friedman, Daniel J. (Institute of Electrical and Electronics Engineers, 2009-05)
    The design of compact low-power I/O transceivers continues to be a challenge for both chip-to-chip and backplane applications. The introduction of dense fine-pitch silicon packaging technologies, that in principle are ...
  • A 110μW 10Mb/s eTextiles Transceiver for Body Area Networks with Remote Batter Power 
    Mercier, Patrick Philip; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2010-02)
    A transceiver for communicating over an electronic textiles medium is implemented for body area networks. A supply-rail-coupled differential signaling scheme permits time-sharing of the eTextiles medium between communication ...
  • A 110μW 10Mb/s eTextiles transceiver for body area networks with remote battery power 
    Mercier, Patrick Philip; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2010-02)
    A transceiver for communicating over an electronic textiles medium is implemented for body area networks. A supply-rail-coupled differential signaling scheme permits time-sharing of the eTextiles medium between communication ...
  • A 1.1 nW Energy-Harvesting System with 544 pW Quiescent Power for Next-Generation Implants 
    Bandyopadhyay, Saurav; Mercier, Patrick Philip; Lysaght, Andrew Christopher; Stankovic, Konstantina M.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2014-09)
    This paper presents a nW power management unit (PMU) for an autonomous wireless sensor that sustains itself by harvesting energy from the endocochlear potential (EP), the 70-100 mV electrochemical bio-potential inside the ...
  • A 120nW 18.5kHz RC oscillator with comparator offset cancellation for ±0.25% temperature stability 
    Paidimarri, Arun; Griffith, Danielle; Wang, Alice; Chandrakasan, Anantha P.; Burra, Gangadhar (Institute of Electrical and Electronics Engineers (IEEE), 2013-02)
    Integrated low-frequency oscillators can replace crystal oscillators as sleep-mode timers to reduce the size and cost of wireless sensors [1]. Since the timer is one of the few continuously functioning circuits, minimizing ...
  • A 12b 250 MS/s Pipelined ADC With Virtual Ground Reference Buffers 
    Boo, Hyun Ho; Boning, Duane S.; Lee, Hae-Seung (Institute of Electrical and Electronics Engineers (IEEE), 2015-12)
    The virtual ground reference buffer (VGRB) technique is introduced as a means to improve the performance of switched-capacitor circuits. The technique enhances the performance by improving the feedback factor of the op-amp ...
  • A 12b 50MS/s 2.1mW SAR ADC with redundancy and digital background calibration 
    Chang, Albert H.; Lee, Hae-Seung; Boning, Duane S. (Institute of Electrical and Electronics Engineers (IEEE), 2013-09)
    A 12-bit 50MS/s SAR ADC implemented in 65nm CMOS technology is presented. The design employs redundancy to relax the DAC settling requirement and to provide sufficient room for errors such that the static nonlinearity ...
  • A 12b 50MS/s fully differential zero-crossing-based ADC without CMFB 
    Lee, Hae-Seung; Brooks, Lane (Institute of Electrical and Electronics Engineers, 2009-05)
    As intrinsic device gain and power supply voltages decrease with CMOS technology scaling, it is becoming increasingly challenging for designers of conventional opamp-based switched-capacitor circuits to meet gain and output ...
  • A 12b, 50 MS/s, Fully Differential Zero-Crossing Based Pipelined ADC 
    Brooks, Lane; Lee, Hae-Seung (Institute of Electrical and Electronics Engineers, 2009-12)
    Zero-crossing based switch capacitor circuits have been introduced as alternatives to op-amp based circuits for eased design considerations and improved power efficiency. This work further improves the resolution, power ...
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