Lab

Lab 6 - EE 420L Engineering Electronics II

Author: Matthew Meza

Email: mezam11@unlv.nevada.edu

March 6, 2015

Single-Stage Transistor Amplifiers

Click on any picture for its full size!

Pre-lab work

This lab will utilize the ZVN3306A and ZVP3306A MOSFETs.
Review these datasheets and become familiar with these transistors.
Verify that the simulations seen in lab6_sims.zip reasonably model the behavior of the transistors' ID v. VGS, ID v. VDS, and gm v. VGS curves.
Finally, watch the video single_stage_amps and review single_stage_amps.pdf

Lab Description

This is a two week lab which can be viewed here.

Lab Data

For the following questions and experiments assume VCC+ = +5V and VCC- = 0V.

Experiment 1

Theoretical Hand Calculations

Experimental Hand Calculations

NMOS

Gain The gain should be approximately 1 but body effect causes it to be lower	Input Resistance The input voltage is halfed using the resistor from the hand calculation	Output Resistance The output voltage is halfed using the resistor from the hand calculation

PMOS

Gain The gain should be approximately 1 but body effect causes it to be lower	Input Resistance The input voltage is halfed using the resistor from the hand calculation	Output Resistance The output voltage is halfed using the resistor from the hand calculation

Experiment 2

Theoretical Hand Calculations using the previous derivations

Experimental Hand Calculations

NMOS

Gain The gain should be approximately -7 but body effect causes it to be lower	Input Resistance The input voltage is halfed using the resistor from the hand calculation	Output Resistance The output voltage is halfed using the resistor from the hand calculation

PMOS

Gain The gain should be approximately -6 or -7 but body effect causes it to be lower	Input Resistance The input voltage is halfed using the resistor from the hand calculation	Output Resistance The output voltage is halfed using the resistor from the hand calculation

Experiment 3

Hand Calculations using the derivations from above

Experimental Calculations

NMOS

Gain The gain should be approximately 7 but body effect causes it to be lower	Input Resistance The input voltage is halfed using the resistor from the hand calculation	Output Resistance The output voltage is halfed using the resistor from the hand calculation

PMOS

Gain The gain should be approximately 7 but body effect causes it to be lower	Input Resistance The input voltage is halfed using the resistor from the hand calculation	Output Resistance The output voltage is halfed using the resistor from the hand calculation

Experiment 4

Gain with 100K Resistor	Gain with 510K Resistor

As you can see from the graphs, the output is much less than the hand calculations. This can be due to the mismatch
of transistors.