Opticslecture9

Opticslecture9 - Practical Op-Amp Design Considerations The...

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Unformatted text preview: Practical Op-Amp Design Considerations The results presented in the preceding pages suggest that operational amplifiers permit the design of a rather sophisticated circuit in a few very simple steps, simply by selecting appropriate resistor values. This is certainly true, provided that the circuit component selection satisfies certain criteria. Here we summarize some important practical design criteria that the designer should keep in mind when selecting component values for op-amp circuits. Previous sections explore the practical limitations of op-amps in greater detail. 1. Use standard resistor values. While any arbitrary value of gain can, in principle, be achieved by selecting the appropriate combination of resistors, the designer is often constrained to the use of standard 5 percent resistor values. For example, if your design requires a gain of 25, you might be tempted to select, say, 100- and 4-k Ω resistors to achieve R F IR s = 25....
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This note was uploaded on 04/17/2008 for the course EECS 202 taught by Professor Plonus during the Spring '08 term at Northwestern.

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Opticslecture9 - Practical Op-Amp Design Considerations The...

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