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(mc12)
where xd is the variable depletion layer width which is calculated from:
(mc2)
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| bet | 46/57 | | Sana | 09.05.2021 | | Hajmi | 0,62 Mb. | | #14427 |
(mc12)
where xd is the variable depletion layer width which is calculated from:
(mc2)
In order to find the capacitance corresponding to a specific value of the gate voltage we also need to use the relation between the potential across the depletion region and the gate voltage, given by:
(mc8)
In inversion the capacitance becomes independent of the gate voltage. The low frequency capacitance equals the oxide capacitance since charge is added to and from the inversion layer in a low frequency measurement. The high frequency capacitance is obtained from the series connection of the oxide capacitance and the capacitance of the depletion layer having its maximum width, xd,max. The capacitances are given by:
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