Electrical Engineering › Section Q · Thyristors, operational amplifiers, and power conversion › Topic Q.4
Single-ended, differential, and operational amplifiers
The operational amplifier is a packaged differential amplifier with enormous gain, and it is the most widely used building block in analogue electronics. This topic explains what it amplifies, why its gain is so high, and what it does with no feedback at all.
In this topic
- The amplifier as a triangle
- Split supplies
- Differential amplifiers
- Worked example: a differential amplifier
- Why "operational"?
- The ideal op-amp
- Too much gain to use alone
- The comparator
- Worked example: setting a duty cycle
- Bargraphs and flash converters
- Common mistakes to avoid
- Key takeaways
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