Designing a practical integrator

1. What is a practical integrator?
2. What is maximum gain of practical integrator?
3. What are the advantages of practical integrator?
4. What is an ideal integrator?

What is a practical integrator?

The practical integrator is also called as lossy integrator as it integrates only frequencies greater than fa (i.e. higher frequencies) effectively. Thus we can have following observations from frequency response of practical integrator: 1.

What is maximum gain of practical integrator?

For a practical integrator, the gain limiting frequency is f_a= 1/(2πR_F C_F). After f_a, the gain decreases at a rate 20db/decade and reaches 0db. The frequency at which gain is 0db is f_b= 1/(2π R_F×C_F). So, the circuit act as integrator between f_a and f_b.

What are the advantages of practical integrator?

The main advantage of an active integrator is the large time constant, which results in the accurate integration of the input signal.

What is an ideal integrator?

The ideal op-amp integrator is an inverting amplifier whose output voltage is proportional to the negative integral of the input voltage thereby simulating mathematical integration.