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Introdcution

Introdcution. Applications of Op-Amps. (Active filter). Question: How do you build a 741 op-amp? What is inside the package?. 741 Op-Amp. Bipolar junction transistor. Order of Presentation. Diode Device Physics Circuit Design Bipolar junction transistor Device Physics

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Introdcution

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  1. Introdcution

  2. Applications of Op-Amps (Active filter) Question: How do you build a 741 op-amp? What is inside the package?

  3. 741 Op-Amp Bipolar junction transistor

  4. Order of Presentation • Diode • Device Physics • Circuit Design • Bipolar junction transistor • Device Physics • Circuit Design • Complementary Metal Oxide Semiconductor • Device Physics • Circuit Design

  5. Device Physics Electrons are injected into the BC junction Electrons are injected into the B; holes to the E. Electrons are swept across the reversed biased BC

  6. Bipolar Junction Transistor Implementation of 7400 Gate (We will learn to work with BJTs in ES230)

  7. 2-Input NAND Gate F can only be pulled down if both A=B=1. F will be pulled up if either A or B is 0 V.

  8. So far • Device Physics • Transistor level design • Build circuits using transistors • Using breadboard • On PCB

  9. Design Circuits Systematically • Analytical Calculation • Matlab • Using Cadence (Linux Based) • Build proto-type • Breadboard • PCB

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