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OP amp Specifications

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garimella

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Ideal op amp has many specifications such as
High Input Impedance, High BW, High Slew Rate, Zero o/p Impedance, Infinite PSRR , Infinite CMRR ,zero offset,zero input current etc

Wanted to know what factors contribute to achieve each of the above goals in an op amp. For example to achieve zero o/p impedance, what is required to be done in the design level and so on
 

Sounds like a request to retell an integrated analog circuit design text book, chapter by chapter.
 

Hi FvM
I just wanted design principles governing these factors, not the detail.
 

garimella said:
I just wanted design principles governing these factors, not the detail.
Click to expand...
Tell me what are the design principles in building a car with super gas mileage, race-car power, great handling, stop-on-a-dime brakes, large passenger space, but leave out the details. :wink:
 

I do not design opamps, I just select one and use it. When you learn about opamps you will see that they have a very high voltage gain of 100,000 to 1 million without negative feedback and an output resistance of maybe 75 ohms. Then when negative feedback is added to reduce the gain and reduce distortion the output impedance becomes extremely low.

You can buy opamps that have any or all of the spec's you mentioned.
 

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