huojinsi
Full Member level 5
Utilizing spectre simulator and the models file of 5V standard CMOS process , a nmos transistor is simulated, and the DC operation point of this nmos transistor is printed in the picture. Under the condition of normal operation state, i have some doubts concerning its DC parameters:
1. Why is the "ibulk" current so big?
2. What is the relation of the DC parameters in the blue mark rectangle? why the Vdsat doesn't equate (Vgs-Vth)? According to the Vds,vgs and vth, how to calculate this vdsat and get 647.4mV?
Pls guide me! Any reply is very appreciated! Thks in advance!
1. Why is the "ibulk" current so big?
2. What is the relation of the DC parameters in the blue mark rectangle? why the Vdsat doesn't equate (Vgs-Vth)? According to the Vds,vgs and vth, how to calculate this vdsat and get 647.4mV?
Pls guide me! Any reply is very appreciated! Thks in advance!