Quiz answers: Did you do the math?

Last week, I posted a short quiz so readers could test their analog knowledge. All answers are found in the Analog Engineer's Pocket Reference Guide, a new book of commonly used precision signal chain equations, tables, charts and circuits. It’s available as a downloadable PDF or eBook that can be viewed on your computer, smart phone or tablet – providing fast access to needed information. Hopefully, it will help you find solutions to your analog problems much faster than before.   

I’ve listed answers to the quiz questions below, along with the corresponding page numbers for reference.

How well did you do? Leave a comment on this post and let us know!

Answer 1: See straight line approximation below. (See page 30)

Answer 2: Note that the same result can be determined with simulation.  Also note, that the signal is considered “small signal” because it is less than 100mV. (See page 43)

Answer 3: Use the chart or formula.  Note that the formula omits the Δf term to display results as a spectral density. (See page 47)

Answer 4: The phase margin can be determined using Figure 36. (See page 49)

Answer 5: MSOP-10 (See page 60)

Answer 6: 139.3Ω (See page 72)

Answer 7: 12.17 bits (See page 92)

Additional resources:

• Search complete board- and system-level reference design circuits in the TI Designs Precision library.