Tagged Questions

2
votes
1answer
172 views

how does better isolation between gate and channel in a mosfet, result in a higher input impedance?

I wanted to know what are the factors that affect the input impedance of a device, majorly in a MOSFET, how does better isolation between the gate (resulting in less leakage current) result in a ...
2
votes
4answers
456 views

Input impedance of an op Amp

I noticed that the input impedance of an op Amp is extremely high. Why is that so?
2
votes
1answer
257 views

Input impedance

I'm trying to figure out what the input impedance of the ADF4113 is. Looking a figure 15, I'm not sure how to read that. In my setup input is on RFinA and RFinB if connected to GND via a 100pF ...