8. Given an nMOSFET with Cox- 4.32 femtoFarads/micron squared and kn prime = 194 microamps/Volt squared...
Problem 6: An NMOSFET with threshold voltage , Vt= 1 volt, is to be operated with the following voltages : Vsource= 0 volts Vgate=+2.5 volts Vdrain= +1.0 volts a) What is gate to source voltage ,Vgs= b) What is Overdrive voltage, Vov=_ c) What is drain to source voltage, Vds- d) What is the region of operation for the NMOSFET? triode, saturation or cutoff?
6.(14) For the nMOSFET circuit below, you want to operate the nMOSFET in saturation region with ld-0.1 ma and Vd-0.3 volts. (a) What value of Rd and Rs will accomplish that? (b) Validate your computations that the nMOSFET is in saturation mode. Given Vt (threshold voltage) = 0.5 volt, unCox-400uamp/V squared, L= 0.4 um, w=5um. N DS
5. You are given a MOSFET biased as shown in the figure. i) Sketch the drain current Ip when Vo is ramped up from 0V to 3 V in a log scale. log(ID ↑ I, 2 0 ) The MOSFET has switched through different operation regions (inear, saturation, subthreshold) during the ramp-up ii) The MOSFET has swit Label the different regions in the graph as you plot the curve above. iii) In dicate the values Vo's that mark the different...
the Ebers-Moll VT = kB T/e. (c) Use your result from part (b) to find the resistance Rg necessary to generate 7.5μΑ of current with 20μΑ of programming current. (programming 6. FET I-V Curves. [10 pts.] Consider the family of I- V curves for a field effect transistor (FET) shown below. (a) Are the curves shown for a JFET or or an en- hancement mode MOSFET? Explain briefly how you know. (b) Table values for the given gain-source volt- ages...