To use MOSFET device as a Capacitor:
Let us use nMOSFET device here for discussion.
Use the Figure 26 for the working of nMOSFET as a Capacitor.
Figure 26: MOSFET(n) as Capacitor - Accumulation region
The following points to be noted:
The Source, Drain and the Bulk/Body terminals are grounded
The Gate voltage applied is variable
For Gate Voltage less than the Threshold Voltage, the transistor operates in the sub-threshold region
For Gate Voltage equal to or greater than the Threshold Voltage, the inversion layer starts developing in the transistor.
Your test is submitted successfully. Our team will verify you test and update in email for result.