Concept explainers
Design a two−pole low−pass Butterworth filter with a bandwidth of2.5 kHz. The largest capacitor value to be used is 50 pF. (Ans. Set
The design parameters of a low-pass Butterworth filter.
Answer to Problem 15.1EP
The design parameters are:
Explanation of Solution
Given Information:
Bandwidth of low-pass Butterworth filter is
Value of largest capacitor is 50 pF.
Calculation:
A general low-pass Butterworth circuit is shown below.
Consider
The relation between
So, the value of capacitor
dB frequency or bandwidth of the circuit is
Substituting the values,
The value of capacitor C is
So, the value of resistance R, from equation (1) is
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Chapter 15 Solutions
Microelectronics: Circuit Analysis and Design
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