External Supply for Analog Circuits in the MCU

Thread Starter

lucas03

Joined Apr 5, 2020
11
I worked with an ARM Cortex M3 microcontroller and in the schematic of this microcontroller there is a pi filter linked to external supply
 

Papabravo

Joined Feb 24, 2006
13,533
Let's be Socratic -- shall we?

What characteristic does that particular filter have?
  1. Low Pass
  2. High Pass
  3. Bandpass
  4. Bandreject (aka Notch)
 

Papabravo

Joined Feb 24, 2006
13,533
Very good it is a lowpass filter. Next questions.

What is the corner frequency of this lowpass filter?
  1. 159 Hz.
  2. 440 Hz
  3. 1591 Hz.
  4. 3125 Hz.
What is the order of the filter?
  1. 2nd Order
  2. 3rd Order
  3. 4th order
  4. 5th order
What kind of lowpass is it?
  1. Chebyshev
  2. Bessel
  3. Elliptical
  4. Butterworth
  5. none of the above
 
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