Athens capacitor model

What is a capacitance model in a MOSFET?

ice’s capacitive effects. Thus, a capacitance model describing the intrinsic and extrinsic components of the device capacitance, is another essential part of a compact MOSFET model for circuit simu ation besides the DC model.In most circuit simulators the same capacitance model is used for both the large-signal transient analysis and t

Why is flat-band voltage important in m sfet capacitance model-ing?

b in the capacitance modelsFlat-band voltage is an important parameter in M SFET capacitance model-ing. In the capMod=0 model the flat-band voltage is treated as a model parameter and different Vth models are used in the

What are the components of extrinsic capacitance?

the extrinsic capacitances. As shown in Fig. 5.1.1, the extrinsic capacitance consists of four components, gate overlap capacitance Cov (CGSO/CGDO, CGSOL/CGDOL and CGBO) in source/drain region, outer fringing field capacitance CFO, inner fringing field capacitance CFI, and source/drain junction c

How accurate is a capacitance model?

This model is smooth, continuous and accurate throughout all operating regions. • Separate effective channel length and width are used for capacitance models.

Why is constant Vth important in capacitance modeling?

Consistent Vth between DC and CV is important for acurate circuit simulation. capMod=1, 2 and 3 use the same Vth as in the DC model. Therefore, those effects, such as body bias, DIBL and short-channel effects are all explicitly considered in capacitance modeling.

What is AP capacitance in bsim3v3?

ap capaci-tance in BSIM3v3. For example, in digital circuit applications the speed delay of a circuit, say a ring oscillator, is often used as the figure of merit to judg the accuracy of the model. It has been found that the change in the circuit delay time is not very significant (less than 2%) when the bias dependent overlap capacitance is