EE302Lecture20 - 1 The Operational Amplifier 2 The...

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Unformatted text preview: 1 The Operational Amplifier 2 The Operational Amplifier In this lecture, you will learn: The characteristics of an ideal operational amplifier The application of the operational amplifier to five circuit configurations: The comparator The inverting amplifier The non-inverting amplifier The summing amplifier The difference amplifier 3 The Operational Amplfier The term is rooted in the days of the analog computer A unit used to perform addition, subtraction, multiplication, division, differentiation or integration Today, the term op amp usually refers to a highly integrated circuit capable of performing these same operations by adding external components 4 The 741 Op Amp One of the first solid-state integrated op-amps (1966) Still widely used today Inverting input Non-inverting input Output V + V- 2 3 7 4 6 1 5 Offset null- +- + Inverting input 2 Non-inverting input 3 V- 4 Offset null 1 7 V + 6 Output 5 Offset Null 8 NC 5 The 741 Op-Amp You get all of this for around 20 cents. Inverting input Non-inverting input Output V + V- 2 3 7 4 6 1 5 Offset null- + 6 Output Input Characteristics Output-Input Characteristics-20-15-10...
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EE302Lecture20 - 1 The Operational Amplifier 2 The...

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