What are the effects of compensation on the response characteristics of operational amplifier?

What are the effects of compensation on the response characteristics of operational amplifier?

Out of the loop compensation technique uses a simple resistor to isolate the capacitive load with the op-amp, lowering the capacitive loading of the op-amp. The resistor typically varies from 10-50 Ohms but the increase in isolated resistor effects the op-amp bandwidth.

What is meant by frequency compensation Slideshare?

Frequency Compensation

• This method is similar to the first in that a dominant pole is introduced. This time its position is selected by the user and is positioned so that the gain drops to the desired gain at the point the first natural break frequency occurs.

  What is the best form of compensation?

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  What is an example of direct compensation?

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  How is frequency compensation used in a circuit?

  The Solution is to provide frequency compensation to the op-amp. This is a useful technique to overcome the instability of the op-amp as well as improve the step response of the circuit. There are different types of frequency compensation techniques used in electronics.

How is the frequency of an op amp compensated?

Op-Amp Frequency Compensation Nowadays most op-amps come compensated internally by means of suitable on-chip components. Typically, the compensation is intended for closed-loop gains all the way down to the unity gain of voltage-follower operation.

How is noise immunity improved by frequency compensation?

Noise immunity is improved since noise frequency components outside the bandwidth are eliminated. Though simple and effective, this kind of conservative dominant pole compensation has two drawbacks: It reduces the bandwidth of the amplifier, thereby reducing available open loop gain at higher frequencies.

Which is an optional compensation for loop frequency?

An optional compensation is to connect the RC network between the V C pin and the feedback pin. See loop frequency compensation section. Figure 20.13 ’s output is limited to unipolar operation because the step-up transformer cannot pass DC polarity information.