How Do You Calculate Gain and Cutoff Frequency in a Switched Capacitor Circuit?

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    Capacitor Circuit
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Discussion Overview

The discussion centers around calculating gain and cutoff frequency in a switched capacitor circuit, specifically in the context of a low pass filter configuration. Participants are seeking clarification on the application of formulas related to equivalent resistances and gain calculations.

Discussion Character

  • Homework-related

Main Points Raised

  • One participant proposes that the circuit is a low pass filter gain equivalent circuit, involving capacitors and resistors.
  • The same participant suggests using the formula Req = 1/C*f to find equivalent resistances based on the capacitors and frequency switches.
  • They also mention that the low frequency gain could be calculated using A = -R2/R1, where R2 and R1 are the equivalent resistances derived from the capacitors and frequency.
  • Additionally, they propose a formula for the cutoff frequency as fo = 1/2*pi*R2*C1.
  • Several participants express a need for assistance, indicating urgency due to an impending assignment deadline.

Areas of Agreement / Disagreement

The discussion does not show any consensus or resolution, as participants are primarily seeking help and clarification on the calculations without providing definitive answers or corrections to each other's claims.

Contextual Notes

There may be limitations in the assumptions regarding the circuit configuration and the application of the formulas, as well as potential dependencies on specific definitions of components and their roles in the circuit.

Who May Find This Useful

Students or individuals working on assignments related to switched capacitor circuits, low pass filters, or those needing clarification on gain and cutoff frequency calculations.

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To start: I believe this is a low pass filter gain equivalent circuit, with Capacitor in feedback with two resistors.

To find the resistors I wasnt really sure but I found something in my textbook Req = 1/C*f, so could I use the two separate capacitors and frequency switches to calculate the equivalent resistances?

So the low frequency gain would be A = -R2/R1, where R2 and R1 would be the equivalent resistances based on the capacitors and frequency.

And fo = 1/2*pi*R2*C1 ??

Could someone please check this logic over and get back to me. My assignment is due SOON!
 
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any help please?
 
please any help?!
 
help?
 
anyone please help assignment due
 
any input guys? id deeply appreciate it
 

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