bsiegel

October StudentZone Quiz Solution

Discussion created by bsiegel Employee on Oct 5, 2017

Follow the link to the Filter Wizard to answer the questions

http://www.analog.com/designtools/en/filterwizard/

 

Quiz:

Design a two-stage low-pass Butterworth filter with the following specifications with a cut-off frequency of 1 MHz, stop band of 3 MHz and a gain of 0 dB. Optimize your design for Low noise and +/-5V supply. Use the default component tolerance and the amplifiers recommended by the tool.

What is the total quiescent power of the filter?

Answer:

The power view option in the Analog Filter Wizard design tool gives you the total quiescent power which is 94.5mW. (See also the figure attached)


 

 

Question:

Design a two stage low-pass 4th order Chebyshev filter with a passband ripple of 0.08 dB and 4th order Butterworth filter with same specifications to compare them. Which filter has the narrow transition band?

Answer:

Chebyshev filter has the smaller transition region when compared to the same order Butterworth filter with more ripples.

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