metal oxide semiconductor

[′med·əl ¦äk‚sīd ′sem·i·kən‚dək·tər]

(solid-state physics)

A metal insulator semiconductor structure in which the insulating layer is an oxide of the substrate material; for a silicon substrate, the insulating layer is silicon dioxide (SiO₂). Abbreviated MOS.

Metal Oxide Semiconductor

(electronics)

(MOS) The three materials used to form a gate in the most common kind of Field Effect Transistor - a MOSFET.

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

MOS

(1) (Metal Oxide Semiconductor) See MOSFET.

(2) (Mean Opinion Score) The quality of a digitized voice line. It is a subjective measurement that is derived entirely by people listening to the calls and scoring the results from 1 to 5. Toll quality audio is generally considered to have a MOS rating of 4 and above. See toll quality audio.

The MOS is an average of the numbers for a particular codec. Because MOS testing requires carefully prepared and controlled test conditions, the best way to get a MOS test done is to have it outsourced. See codec.

An Objective Model
The E-Model is another rating system that provides an objective measurement of quality based on packet loss, jitter and delay. The E-Model reports results as R-values. Following is an approximate relationship between MOS and E-Model quality ratings.

Subjective Interpretation         MOS  R

 Perfect                           5.0 100

 Excellent - almost all satisfied  4.5  90

 Very good - most are satisfied    4.0  80

 Good - some are dissatisfied      3.6  70

 Fair - many are dissatisfied      3.1  60

 Poor - most are dissatisfied      2.6  50

 Bad - not recommended             1.0   0

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References in periodicals archive

Most commonly used in integrated circuits is the complementary metal oxide semiconductor, or CMOS, transistor.

Looking for Mr. Goodoxide

Netherlands contractor Philips Semiconductors has developed the CMOS18 Flash memory module, a two-transistor cell for use in its 0.18-[micro]m complementary metal oxide semiconductor (CMOS) technology.

Philips Develops Embedded Flash Memory for CMOS Technology

The ministry said August output increased particularly in passenger cars, electronic toys and metal oxide semiconductor integrated circuits.

Japan's Aug. industrial output up 4.6 pc from July

The plant, which has been partially funded by the government Technology Development Board "will produce raw materials crucial in the manufacture of high power transistors, diode chips, integrated circuits and metal oxide semiconductor devices," Kanchan said.

Usha Launches First Indian Silicon Wafer Plant

Each computer stores attributes about its components (e.g., keyboard, display and disks) in a complementary metal oxide semiconductor (CMOS) chip.

Year 2000 issues for tax practitioners

This edition has more on analog design of passive devices of resistors, capacitors, inductors, and active devices of diodes, bipolar junction transistors, and MOSFETS (metal oxide semiconductor field-effect transistors); more emphasis on ESD power clamps for power rails for CMOS (complementary metal oxide semiconductors), bipolar technology, and BiCMOS (bipolar-CMOS); more on EOS issues; new ESD networks; changes in trends of receivers and off-chip drivers; information on co-synthesizing of semiconductor chip architecture and floor planning with ESD design practices for analog and mixed signal applications; more emphasis on system-level testing conforming to IEC 61000-4-2 and IEC 61000-4-5; and improved coverage of low-capacitance ESDs, scaling of devices, and oxide scaling challenges.

ESD: Circuits and Devices, 2nd Edition

is a holding company, owning subsidiaries that manufacture and market a diversified portfolio of products, such as complementary metal oxide semiconductor (CMOS) and camera modules (CCMs).

Global-Tech Advanced Innovations Q3 net sales dip YoY

In an effort to overcome limitations on the further miniaturization of complementary metal oxide semiconductor (CMOS) field-effect transistors, researchers have developed high dielectric constant (k) gate stacks that match the performance of conventional gate dielectrics based on silicon dioxide.

High-k gate dielectrics for CMOS technology

This second edition adds new information on design of RFICs using complementary metal oxide semiconductor (CMOS) transistors; it adds new equations for CMOS circuits and includes complete CMOS-based design examples for each of the major radio frequency building blocks.

Radio frequency integrated circuit design, 2d ed