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| Although some high-power op amps are available, most are
low-power devices with a maximum power rating of less than a watt.
Some op amps are optimized for their bandwidth, others for low input
offsets, others for low noise, and so on. This is why the variety of
commercially available op amps is so large. You can find an op amp
for almost any analog application. Op amps are some of the most basic active components in analog systems. For instance, by connecting two external resistors, we can adjust the voltage gain and bandwidth of an op amp to our exact requirements. Furthermore, with other external components, we can build waveform converters, oscillators, active filters, and other interesting circuits. |