Please help me by asking technical questions

[KingNothing]

Hello all. I may or may not have a job interview coming up for an entry-level position. The company's website says the following:

Interviews, both in person and on the phone, are technical and address fundamentals of resistor, bipolar and CMOS (analog and digital) designs.

I just recently graduated and it's been about a year since I had any really technical classes. I did take a CMOS digital design course and all the normal EE classes. I would appreciate it greatly if you all could help me by throwing some questions at me!

 

[berkeman]

1) List some logic families, both 5V and 3.3V, and describe when they are used.

2) Are there issues connecting the different logic families together? What are the issues? How do you handle those issues?

3) Describe situations where you would use a logic gate with hysteresis and why.

4) Does current gain go up or down with temperature for a) Bipolar and b) CMOS transistors? Why?

5) Draw an inverting opamp circuit, and explain what some non-ideal properties are of real opamps. What would you expect to be different between CMOS and Bipolar opamps, in terms of these non-ideal properties? What kinds of things do you need to do to accommodate the non-ideal properties of real opamps?

6) Draw a comparator circuit, and describe a) why hysteresis is needed, and b) how you implement it and calculate the value of Vh.

...

 

[berkeman]

Also, reviewing this fun thread in EE about analog circuits may help to jog your memory:

The Horowitz & Hill "Bad Circuits" thread:
https://www.physicsforums.com/showthread.php?t=178516

.