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Equation 8 · Part 1 · How Advanced Semiconductor Fabrication Actually Works

Symbol C_ox

CoxC_{\mathrm{ox}}
CoxC_{\mathrm{ox}}

What this part means

the gate’s own oxide capacitance.

Its job in the formula

CoC_ox is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Where the article explains it

where CdepC_{\mathrm{dep}} is the capacitance of the depletion region the gate does not fully control and CoxC_{\mathrm{ox}} is the gate’s own oxide capacitance.

The passage around this formula

where CdepC_{\mathrm{dep}} is the capacitance of the depletion region the gate does not fully control and CoxC_{\mathrm{ox}} is the gate’s own oxide capacitance. As CdepC_{\mathrm{dep}} falls toward zero, S falls toward its physical floor of about 60 millivolts per decade at room temperature. Wrapping the gate fully around the channel is, in this equation, a direct attack on CdepC_{\mathrm{dep}} : there is no…

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Sources cited in the surrounding passage

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