Practice Digitally Controlled Filters (12.7.5) - Data Conversion Circuits – D/A and A/D Converters - Part B
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Digitally Controlled Filters

Practice - Digitally Controlled Filters

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Practice Questions

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Question 1 Easy

What is the cut-off frequency in a filter?

💡 Hint: Think about where the filter stops passing regular signals.

Question 2 Easy

Name one advantage of using digitally controlled filters.

💡 Hint: Consider how flexibility improves design efficiency.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the cut-off frequency indicate in a filter?

The maximum frequency allowed
The frequency where output decreases significantly
The frequency where input is blocked

💡 Hint: Think about where signals start to fade in filters.

Question 2

True or False: Higher resistor values always increase the cut-off frequency.

True
False

💡 Hint: Refer back to the R-dependent filter equation for clarity.

1 more question available

Challenge Problems

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Challenge 1 Hard

Design a digitally controlled low-pass filter with a specified cut-off frequency of 1 kHz. Outline the key components chosen and the reasoning for each selection.

💡 Hint: Use the formula ω = 1/(R×C) to relate your values to the desired frequency.

Challenge 2 Hard

Explain how a programmable time constant can be beneficial in a digital filter for an adaptive audio processor.

💡 Hint: Consider scenarios where audio signals can rapidly change, and how this feature addresses those needs.

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