Final answer:
An ideal op amp is a theoretical device with infinite impedance, zero output impedance, infinite bandwidth, and infinite gain. Real op amps differ from the ideal in practical applications, including having finite gain, finite input and output impedance, noise, finite bandwidth, and slew rate limits.
Step-by-step explanation:
It seems that your question might be incomplete, as it ends with 'Consider an op amp that is ideal except that?' If you were asking about the ways in which a real-world operational amplifier (op amp) differs from the ideal, then there are several parameters where this can occur. An ideal op amp is a theoretical device with certain assumed characteristics, such as infinite input impedance, zero output impedance, infinite bandwidth, and infinite open-loop gain amongst others, which cannot be achieved in practice.
Real op amps have various characteristics that can deviate from the ideal. For example, a finite open-loop gain, noise, finite input impedance, and non-zero output impedance are all typical characteristics of non-ideal op amps. There is also a finite bandwidth and a slew rate limit, which is the maximum rate of change in output voltage per unit of time. These limitations all affect how the op amp will perform in different circuits.
To analyze a real-world op amp, you would need to use the specific parameters given by the manufacturer in the data sheet. This often includes performing calculations or simulations taking into account these non-ideal traits. Depending on the specific context of your coursework or project, certain non-ideal factors might be more significant than others.