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The parasitic capacitance between the turns of an inductor (e.g. Figure 1) or other wound component is often described as self-capacitance. However, in electromagnetics, the term self-capacitance more correctly refers to a different phenomenon: the capacitance of a conductive object without reference to another object.
One such example is in the stabilization of feedback amplifiers, where the required capacitance may be too large to practically include in the circuit. This may be particularly important in the design of integrated circuits , where capacitors can consume significant area, increasing costs.
Interconnect capacitance is calculated by giving the extraction tool the following information: the top view layout of the design in the form of input polygons on a set of layers; a mapping to a set of devices and pins (from a Layout Versus Schematic run), and a cross sectional understanding of these layers. This information is used to create a ...
In electrical networks, a parasitic impedance is a circuit element (resistance, inductance or capacitance) which is not desirable in an electrical component for its intended purpose. For instance, a resistor is designed to possess resistance, but will also possess unwanted parasitic capacitance .
In an electrical or electronic circuit or power system part of the energy in play is dissipated by unwanted effects, including energy lost by unwanted heating of resistive components (electricity is also used for the intention of heating, which is not a loss), the effect of parasitic elements (resistance, capacitance, and inductance), skin effect, losses in the windings and cores of ...
An example of this, much used in filtering, is the helical resonator. An inductor consisting of a coil of wire, is self-resonant at a certain frequency due to the parasitic capacitance between its turns. This is often an unwanted effect that can cause parasitic oscillations in RF circuits.
SPEF — Standard Parasitic Exchange Format; SBPF — Synopsys Binary Parasitic Format; SPF is a Cadence Design Systems standard for defining netlist parasitics. DSPF and RSPF are the two forms of SPF; the term SPF itself is sometimes used (or misused) to represent parasitics in general. DSPF and RSPF both represent parasitic information as an ...
The limitation on bandwidth in this circuit stems from the coupling of parasitic transistor capacitance C gd between gate and drain and the series resistance of the source R A. (There are other parasitic capacitances, but they are neglected here as they have only a secondary effect on bandwidth.)