minDiffPotentialSpacing (oacMinDiffPotentialSpacing)


Description

The built-in layer constraint definition oacMinDiffPotentialSpacing determines the distance required between two objects at different voltage levels that are on the same layer. The distance is specified in database units.

This constraint typically applies to wells, transistors, and devices that are at different voltage levels.

Constraint at a Glance

Constraint type: oaLayerConstraint
Value types: oaIntValue
Database types: oaDesign, oaTech
Object types: oaAppObject

Values

The following value types are supported by this constraint:

Examples

figMinDiffPotentialSpaceRule.gif

Manufacturing Reasons

When two geometries, typically two NWell shapes, are at different potentials, a larger spacing is required between the two geometries. The larger spacing prevents potential leakage problems through the substrate.


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