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Which op-amp require external compensating network?

(a) Op-amp 771

(b) Op-amp 351

(c) Op-amp 709

(d) Op-amp 741

I got this question during an interview for a job.

My enquiry is from Frequency Response of Internally Compensating and Non-Compensating Op-Amp in portion Practical Limitations of Op Amp Circuits of Linear Integrated Circuits

1 Answer

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The correct answer is:

(c) Op-amp 709

The Op-amp 709 is an example of an op-amp that requires an external compensating network. It is a high-speed, high-gain operational amplifier, but it does not have internal compensation. As a result, an external compensating capacitor is necessary to ensure stability and reduce the risk of oscillations, especially in high-frequency applications.

On the other hand, other op-amps like the Op-amp 741 and Op-amp 351 have internal compensation that allows them to operate without the need for external components to stabilize the frequency response.

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