Symposium 1989 on VLSI Circuits

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A 26 dB, 1.2 GHz wideband GaAs MESFET variable gain amplifier
Symposium 1989 on VLSI Circuits - - 1989
Spargo, Abidi
As an example of analog circuit design in GaAs MESFET IC technology. which wants for the breadth of design techniques that silicon ICs enjoy. we describe here a monolithic amplifier offering a gain variable from 30 dB to below 0 dB. at a bandwidth in excess of 1 GHz, and matched to 5OΩ at the input and output pons. This may find application in wideband digital communication receivers. in fiber opt...... hiện toàn bộ
#Gain #Bandwidth #Integrated circuits #Voltage measurement #MESFETs #Gallium arsenide #Gain measurement
A latch-up like new failure mechanism for high density cmos dynamic RAM's - hysteresis in operating Vcc range
Symposium 1989 on VLSI Circuits - - 1989
Furuyama, Ishiuchi, Tanaka, Watanabe, Kohyama, Kiroura, Muraoka, Sugiura, Natori
AS the RAM has reached higher Integration, transistors have been miniaturized as well as the number of transistors on a chip has increased. Therefore, the substrate current generated by the RAM circuit due to impact ionization has increased drastically. In addition, since substrate impurity concentration has increased with the device scaling, the back-gate bias effect of a transistor has become st...... hiện toàn bộ
#Random access memory #Substrates #Amplitude modulation #Transistors #Hysteresis #Threshold voltage #Couplings
A review of superconducting three-terminal devices
Symposium 1989 on VLSI Circuits - - 1989
Kawabe
Superconducting three-terminal devices have been extensively given attention as one of future digital devices since Bcdnorz and Mueller discovered high-critical-temperature superconductivity in the La-Ba-Cu-0 system. The use of zero-resistance superconductivity and low noise cryogenics is expectcd for a limiting field of silicone semiconductor devices. In this paper, it is worthwhile to review som...... hiện toàn bộ
#Superconductor devices #Digital systems #Temperature measurement
Design of optically coupled three dimensional common memory for parallel processor system
Symposium 1989 on VLSI Circuits - - 1989
Koyanagi, Takata, Mori, Hirose
The optically coupled three-dimensional common memory (called 3D-OCC memory hereafter) ia a newly proposed intelligent memory for high speed parallel processing in computation [l].
#High-speed optical techniques #Adaptive optics #Optical coupling #Optical buffering #Light emitting diodes #Signal detection #Microprocessors
Fuzzy logic hardware systems
Symposium 1989 on VLSI Circuits - - 1989
Yamakawa
Novel fuzzy microprocessors are described, which achieve fuzzy inference with deterministic input and output signals. These two kinds of fuzzy microprocessors are useful for constructing sophisticated fuzzy logic controller. One is a rule chip and the other is a defuzzifier chip. The former is in the monolithic form and the latter is in hybrid structure. These fuzzy microprocessors will rapidly pe...... hiện toàn bộ
#Fuzzy logic #Linguistics #Logic gates #Transistors #Resistors #Microprocessors #Voltage control
A circuit design for 2 Gbit/s Si brpolar crosspoint switch LSIs
Symposium 1989 on VLSI Circuits - - 1989
Suzuki, Yamanaka, Hirata, Kikuchi
A SI bipolar circuits technology for Gblt/s crosspoint switch LSIs Is described. Adopting a new circuit design and a Super Self-aligned process Technology (SST-IA), an 8x8 and a 16x16(+16) crosspoint switch LSis are fabricated.
#Switches #Large scale integration #Switching circuits #Latches #Silicon #Circuit synthesis #Multiplexing
Jitter analysis of high speed sampling systems
Symposium 1989 on VLSI Circuits - - 1989
Shinagawa, Akazawa, Wakimoto
Recent LSI technology advances have resulted in major improvements in electronics. For A-to-D converters. particularly. not only a very high precision over 90 dB [I] but also an ultra high speed of 2 GHz for 6bit [2] have already been achieved.
#Jitter #Mathematical model #Frequency measurement #Clocks #Voltage measurement #Signal to noise ratio #Generators
Ultra-highly parallel residue arithmetic VLSI system
Symposium 1989 on VLSI Circuits - - Trang 127-128 - 1989
Kameyaka, Sekibe, Higuchi
The demands for high-speed computations are obvious in many real-time applications. However, arithmetic operating speed is restricted by carry propagation in conventional binary systems, SO that the residue number system ( RNS 1 is of particular interest because of the inherent property that addition and multiplication are carry-free arithmetic [l].
#Very large scale integration #Parallel processing #Transistors #Real-time systems #Hardware #Encoding #Decoding
A TV(UHF/VHF)/Fm/AM compatible Bi-CMOS 1GHz single chip PLL IC
Symposium 1989 on VLSI Circuits - - 1989
Sugimoto, Mizoguchi, Matsuyama, Sano, Nakayama, Taguchi
Wide band single chip PLL IC is required for receiving the broadcasting signal from long wave to TV UHF an a radio cassette tape recorder and a car radio. Input signal ranges from 0.5MHz to I GHz in frequency.
#Phase locked loops #MOS devices #Tuning #TV #Sensitivity #Voltage-controlled oscillators #Switches
An experimental low temperature DRAM
Symposium 1989 on VLSI Circuits - - 1989
Henkels, Lu, Hwang, Rajeevakumar, Franch, Jenkins, Bumlot, Heidel, Immediato
For over a decade many investigators have studied and demonstrated performance advantages of MOS devices at liquid nitrogen temperatures [l]. Recently the concept of "high speed" DRAM, a new category of DRAM emphasizing performance. at Sr" sacrifice to cost, has been demonstrated [21. In this paper these two concepts are successfully merged to produce a very high speed 512K CMOS DRAM with a 12 ns ...... hiện toàn bộ
#Temperature measurement #Temperature sensors #Random access memory #Land surface temperature #Semiconductor device measurement #Power measurement #Error analysis
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