26. In a Common Emitter (CE) amplifier, the purpose of the emitter resistor, RE (without a bypass capacitor) is to:

30. (8pts) For the matched case, find the values of VOH, VOL, VIH, and VIL for this inverter. Show your work and include units.   Show your work on paper – no need to submit an answer here.  

29. (2pts) Find the width of the PMOS, Wp, so that the NMOS and PMOS devices are “matched” (i.e. VM = VDD/2 for the inverter). Show your work and include units.   Show your work on paper – no need to submit an answer here.

CMOS Inverter (16pts) Consider a CMOS inverter fabricated in a 65-nm CMOS process with the following parameters: Use this information to answer questions 29-31. Include proper units for full credit and show your work.  Unless otherwise specified and if appropriate, give an equation and a number answer.

25. (6pts) What are the values of the small signal variables gm, rπ, and re? Show your work and include units.   Show your work on paper – no need to submit an answer here.  

17. (2pts) Which MOSFET amplifier type is best for voltage amplification?

18. (2pts) In a MOSFET amplifier operating in the active region, the small-signal output resistance, ro, is primarily due to:  

15. (4pts) Find the overall small-signal voltage gain from vi to vo (excluding Rsig). Show your work and include units.   Show your work on paper – no need to submit an answer here.

23. (2pts) Find the voltage at the collector, VC. Show your work.   Show your work on paper – no need to submit an answer here.

MOSFET Amplifiers (26pts) Using the circuit shown in Figure 10, answer the following questions (10 – 16).  Be sure to include proper units and show your work on your scanned submission for full credit.  Unless otherwise specified and if appropriate, give the equation and numerical answer. Figure 10