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

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Presentation transcript:

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 – Circuit Design Complementary Metal Oxide Semiconductor – Device Physics – Circuit Design

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

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

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.

So far Device Physics Transistor level design Build circuits using transistors – Using breadboard – On PCB

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