參數(shù)資料
型號(hào)： V62/08627-01XE
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO8
封裝： GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁(yè)數(shù)： 10/25頁(yè)
文件大?。?/td> 675K
代理商： V62/08627-01XE
ISOLATION GLOSSARY
SLLS882 – JUNE 2008....................................................................................................................................................................................................... www.ti.com
Creepage Distance — The shortest path between two conductive input-to-output leads measured along the
surface of the insulation. The shortest distance path is found around the end of the package body.
Clearance — The shortest distance between two conductive input-to-output leads measured through air (line of
sight).
Input-to-Output Barrier Capacitance -- The total capacitance between all input terminals connected together,
and all output terminals connected together.
Input-to-Output Barrier Resistance -- The total resistance between all input terminals connected together, and
all output terminals connected together.
Primary Circuit -- An internal circuit directly connected to an external supply mains or other equivalent source
that supplies the primary circuit electric power.
Secondary Circuit -- A circuit with no direct connection to primary power, and derives its power from a separate
isolated source.
Comparative Tracking Index (CTI) -- CTI is an index used for electrical insulating materials. It is defined as the
numerical value of the voltage that causes failure by tracking during standard testing. Tracking is the process that
produces a partially conducting path of localized deterioration on or through the surface of an insulating material
as a result of the action of electric discharges on or close to an insulation surface -- the higher CTI value of the
insulating material, the smaller the minimum creepage distance.
Generally, insulation breakdown occurs either through the material, over its surface, or both. Surface failure may
arise from flashover or from the progressive degradation of the insulation surface by small localized sparks. Such
sparks are the result of the breaking of a surface film of conducting contaminant on the insulation. The resulting
break in the leakage current produces an overvoltage at the site of the discontinuity, and an electric spark is
generated. These sparks often cause carbonization on insulation material and lead to a carbon track between
points of different potential. This process is known as tracking.
18
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): ISO721M-EP
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