lect4 - AERO ASTRO 16.682 - Prototyping Avionics Spring...

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ASTRO AERO 16.682 - Prototyping Avionics Spring 2006 LECTURE 4 LECTURE 4 February 21, 2006 February 21, 2006 DEPARTMENT OF AERONAUTICS AND ASTRONAUTICS Alvar Saenz-Ot Alvar Saenz-Ot ero er o
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Outline Amplifiers Ideal vs. Real Basic linear uses Voltage follower (current source) Voltage amplifier Positive feedback Active filters Massachusetts Institute of Technology 2 16. 6 82 - Prototyping Avionics
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Operational Amplifiers Assume ideal during development: v + = v - i + =0, i - =0 Saturation at input power voltage only i + =0 v + v - + - v + pwr Linear Keep in mind for implementat i on: v out Maximum amplification (e.g., 100, i - =0 1000, normally max < 10 6 ) Saturation v - pwr Op-Amps require external +/- supplies! Non-linear region Frequency region Massachusetts Institute of Technology 3 16. 6 82 - Prototyping Avionics
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Buffer/follower Amplifier VCC 1 + - 8 Vout 4 VCC + - 4 3 Vin Vin 2 3
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lect4 - AERO ASTRO 16.682 - Prototyping Avionics Spring...

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