The use of MOS structure for the design of high value resistors in monolithic integrated circuits

Vadasz, L.

doi:10.1109/t-ed.1966.15712

Cited by 19 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3(a). The use of MOSFETs operating in the ohmic region instead of resistors is apparently the most simple option [14]. However, the intrinsic nonlinearity in the I-V characteristic leads to more elaborated alternatives for the cancellation of the nonlinear term [15], even to transconductorbased implementations [16].…”

Section: Mos-resistor Grid Designmentioning

confidence: 99%

Focal-Plane Dynamic Texture Segmentation by Programmable Binning and Scale Extraction

Fernández-Berni

Carmona-Galán²

2011

Focal-Plane Sensor-Processor Chips

View full text Add to dashboard Cite

Dynamic textures are spatially-repetitive time-varying visual patterns that present, however, some temporal stationarity within their constituting elements. In addition, their spatial and temporal extents are a priori unknown. This kind of patterns is very common in nature, therefore dynamic texture segmentation is an important task for surveillance and monitoring. Conventional methods employ optic flow computation though it represents a heavy computational load. Here we describe texture segmentation based on focal-plane space-scale generation. The programmable size of the subimages to be analyzed and the scales to be extracted encode sufficient information from the texture signature to warn its presence. A prototype smart imager has been designed and fabricated in 0.35µm CMOS, featuring a very lowpower scale-space representation of used-defined subimages.

show abstract

Section: Mos-resistor Grid Designmentioning

confidence: 99%

Focal-Plane Dynamic Texture Segmentation by Programmable Binning and Scale Extraction

Fernández-Berni

Carmona-Galán²

2011

Focal-Plane Sensor-Processor Chips

View full text Add to dashboard Cite

show abstract

“…The proposed SNR improvement system consists of a basic variable cut-off low-pass RC filter [1], [2], [3] with MOSFETs operated in the linear region of their current vs. voltage characteristics and so acting as variable resistors [4], [5]. Assuming the signal power is negligibly small at low frequencies, the noise level in the system can be obtained by low-pass filtering the noisy signal.…”

Section: Principle and Designmentioning

confidence: 99%

Adaptable bandwidth system for reliable wireless transmission

Joshi

Green

Leeson

2008

2008 10th Anniversary International Conference on Transparent Optical Networks

View full text Add to dashboard Cite

The concept of a simple adaptable bandwidth system is investigated which can be implemented to maintain reliability of the communication link in a non-directed diffused indoor optical wireless environment under varying channel conditions. The proposed system is found to be more sensitive to any variations in signal-tonoise ratio (SNR) at higher noise magnitudes compared to SNR variations at lower noise magnitudes. INTRODUCTIONIn an optical wireless communication system with non-directed diffused radiation, user mobility requires the communication link to operate reliably under widely varying channel conditions which are determined by the ambient light level, the distance between transmitter and receiver, the degree to which the transmission path is obstructed and the strength of inter-symbol interference induced due to multipath dispersion. The variations in channel conditions are reflected in the signal-to-noise ratio (SNR) at the receiver end. Under adverse conditions, instead of incurring link failure, it is advisable to downgrade the performance and maintain the link at lower data rates and bandwidth. Here, an adaptable bandwidth filter is proposed along with SNR improvement system in order to impart reliability of transmission under varying noise/SNR conditions in an optical wireless system.Since the optical wireless systems operate at frequencies of several hundred Megahertz to several Gigahertz, the use of an analogue filtering system is justified as it offers an economical solution compared to digital systems which require ultra fast sampling circuits and hence can become extremely expensive. Also, the signal sampling and A/D conversion process results in quantisation noise which is a form of distortion at frequencies dependent on the signal and the sampling rate. In order to minimise the quantisation noise, a large number of bits needs to be used which further complicates the design of A/D and D/A converters.

show abstract

“…Alternative high ohm/square resistors are MOS resistors and cermet (ceramic-metal) thin-film resistors. Sheet resistances of 7 − 25 kΩ/square are obtained with good controllability by using non-saturated MOS transistors as resistors [3]. For example, the minimum-size MOS pull-up transistor considered in of Part I [1] has a sheet resistance of 9 kΩ/square.…”

Section: High-valued Resistorsmentioning

confidence: 99%

Limitations in microelectronics—II. Bipolar technology

1973

Microelectronics Reliability

View full text Add to dashboard Cite

The physical phenomena which will ultimately limit miniaturization of planar bipolar integrated circuits are examined. The maximum packing density is obtained by minimizing the supply voltage and the size of the devices. The minimum transistor size is determined by junction breakdown, punch-through, and doping fluctuations. For circuits that are fully active, the maximum number of circuit functions per chip is determined by power dissipation. The packing density of read-only memories becomes limited by the area occupied by devices and interconnections. The limitations of MOS and bipolar technologies are compared. It is concluded that read-only memories will reach approximately the same performance and packing density with MOS and bipolar technologies, while fully active circuits will reach the highest levels of integration with dynamic MOS or complementary MOS technologies.

show abstract

The use of MOS structure for the design of high value resistors in monolithic integrated circuits

Cited by 19 publications

References 8 publications

Focal-Plane Dynamic Texture Segmentation by Programmable Binning and Scale Extraction

Focal-Plane Dynamic Texture Segmentation by Programmable Binning and Scale Extraction

Adaptable bandwidth system for reliable wireless transmission

Limitations in microelectronics—II. Bipolar technology

Contact Info

Product

Resources

About