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Prof. Yasser Mostafa Kadah – www.k-space.org BASIC ELECTRONICS PART 4: OPERATIONAL AMPLIFIER

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Recommended Reference Medical Instrumentation Application and Design, 4 th ed., John G. Webster (ed.)

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Ideal Op Amp Characteristics

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Voltage Follower

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Inverting Amplifier

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Summing Amplifier

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Noninverting Amplifier

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Differential Amplifier Disadvantage: Low input impedance

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Instrumentation Amplifier Advantage: High input impedance

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Comparator

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Logarithmic Amplifier Output proportional to input logarithm

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Integrator

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Differentiator

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Active Filters Low-pass filter High-pass filter Band-pass filter Combination of the two

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Practical Characteristics of Op Amps Gain-Bandwidth Product Constant for any Op Amp Slew Rate Offset voltage Drift Noise

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Example: 741 Op Amp

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Example: LH6702 Wideband Op Amp

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Assignments Download and go through the data sheets of the practical Op Amps discussed and compare their characteristics. Implement Op Amp circuits of your choice in the lab to test their performance.

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