Virtual R,L,C

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Three virtual elements may be added to the layout: resistance, capacitance and inductance.

RESISTANCE. Adding a resistance in the layout is interesting to handle the interconnect resistance effect in analog simulation. In practice, resistance are added in the layout of some analog circuits such as analog-to-digital converters (See ADC.MSK). To insert a resistance, do as follows:

1. Delete a thin portion of the metal or poly interconnect in order to create two separate layers.
2. Click the resistance symbol in the palette or invoke "Edit -> Virtual RLC -> Resistance"
3. Insert the resistance in order to make the electrical bridge between the two nodes.

When adding a resistance, you give:

- Either a fixed value (For example 1200)
- Either a keyword: R(poly),R(metal), or R(All). In that case, at extraction, Microwind updates the value of the resistance according to the layout and current technology.

CAPACITANCE. Adding a virtual capacitance is interesting to investigate the behavior of a circuit when loaded by a capacitance charge, without performing its implementation.

INDUCTANCE. An inductance may be added in the layout to simulate the effect of integrated inductance, in resonant circuits for example.

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