3. Signals and Systems

Sampling Theory — Quiz

Test your understanding of sampling theory with 5 practice questions.

Practice Questions

Question 1

What capacitance C is required in a first-order RC low-pass anti-aliasing filter with R = 10 kΩ to achieve a −3 dB cutoff frequency of 5 kHz?

Question 2

In a sample-and-hold circuit, which error results from leakage currents in the hold capacitor causing the held voltage to change over time?

Question 3

A continuous-time sinusoid of frequency $f_0 = 12\text{ kHz}$ is sampled at $f_s = 20\text{ kHz}$. What aliased frequency $f_a$ appears in the sampled signal?

Question 4

Which ADC architecture is most suitable for moderate resolution (around 12 bits) and moderate sampling rates (up to a few MSPS) while offering low power consumption?

Question 5

What is the primary drawback of flash ADC architectures compared to other ADC types?