Question 1:
Figure 1 depicts a single transistor amplifier; find the biasing point (ID, VDS) of the transistor. Write all required equations to evaluate ID, VDS.
![877_Figure.jpg](https://secure.tutorsglobe.com/CMSImages/877_Figure.jpg)
Question 2:
a. Write the equation that describes the body effect on the transistor.
b. On the graph below:
I. Indicate the stating value of VSB on the graph.
ii. Indicate if VSB is decreasing or increasing with the drawn arrow?
![2141_Figure1.jpg](https://secure.tutorsglobe.com/CMSImages/2141_Figure1.jpg)
Question 3:
a. What is the topology of the opamp in Figure 3?
b. Is it a fully differential or a single ended opamp?
c. On the figure, determine the +ve and -ve input/output terminals.
d. Redraw the circuit induding a common-mode feedback circuit.
![1799_Figure2.jpg](https://secure.tutorsglobe.com/CMSImages/1799_Figure2.jpg)
Question 4:
Figure 4 depicts a fully differential current-mirror op amp.
a. Suggest a modification to the circuit to convert it to a single-ended opamp.
b. Which type of current mirror is used here? State two drawbacks of this type.
c. Redraw the circuit using Wilson current mirrors.
![147_Figure3.jpg](https://secure.tutorsglobe.com/CMSImages/147_Figure3.jpg)
Question 5:
a. Figure a shows three voltage dividers circuits. Evaluate Van for each.
b. In figure a. which circuit is most suitable for an integrated circuit? Why?
c. Figure b. depicts a voltage reference circuit. Find Vast
![398_Figure4.jpg](https://secure.tutorsglobe.com/CMSImages/398_Figure4.jpg)