Capacitor Variation Snippet

How does a Miller capacitor affect op amp performance?

Since the value of the Miller capacitor changes the placement of the dominant pole in the Aol of the op amp, this variation can significantly impact the unity-gain bandwidth and phase margin, which is why these specifications are always given as typical values, even for precision amplifiers and high-speed amplifiers. Figure 1.

How much variation does a Miller capacitor (C26) have?

Over process variation, the value of the Miller capacitor (C26) can vary approximately ±30%, and an additional ±30% (approximate) over temperature. This variation gives a total error of ±30% × ±30%, which is the same as ±30% + ±9%, or ±39% variation.

Is there a link between ion solvation shell loss and anomalous capacitance increase?

Correlating electrochemical performance and in situ tuning of interlayer constrictions, we observe a peak in specific capacitance when interlayer constriction size reaches the diameters of unsolvated ions, supporting the hypothesized link between loss of ion solvation shell and anomalous capacitance increase for subnanometer pores.

How do you know if a MOSFET has a resistance variation?

This would indicate whether the resistance variation with MOSFET corners has been modeled. Then, you can pump a current through a diode-connected MOSFET while stepping through resistor corners. If the voltage changes, it would indicate that that variation has been modeled. My bet is that you can treat them as independent variations.