integrated circuits - michigan technological …€¦ · ppt file · web view2005-03-24 ·...
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INTEGRATED CIRCUITS
EE 2303
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OVERVIEW Introduction What are Op-Amps? Circuit symbol and Pin- Configuration Inverting and Non-inverting modes.. Gain of an Op-Amp.. REFERENCES..
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Introduction
Amplifier is a device which senses an input and produces a larger version of it.
Amplifiers are used to boost electrical signals in devices (radio, televisions..)
Op-Amp: Class of High gain DC Amplifiers with two inputs and Single output
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Symbol & Pin Configuration
Inverting Input
Non-invertingInput
Output
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Inverting and Non-Inverting
Inverting Amplifier:• Non- Inverting input is grounded.• Signal is applied to the Inverting input.• Output is 180o out of Phase.
http://www.national.com/onlineseminar/2003/opamps_basics/090303_Opamp_Trivia_Notes.pdf
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Non-Inverting Amplifier• Inverting input is grounded.• Signal is applied to the Non-Inverting input.• Output is in Phase.
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Closed Loop Connection “Output is applied back in to the
Inverting Input.” Used in both Inverting and Non-inverting
modes of Operation.
http://www.national.com/onlineseminar/2003/opamps_basics/090303_Opamp_Trivia_Notes.pdf
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What is Gain??
Gain = Output / Input
Gain of Op-Amp (Inverting Mode)=-Rf/R1
Gain of Op-Amp (Non-inverting Mode)=1+Rf/R1
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Inverting Summing Amplifier
VOUT=V1+V2
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Op-amp as Oscillator
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Differential and Common mode Common Mode: When both inputs of
the signal have the same common voltage..
Output will be zero in the common mode.
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Pre-lab1.Copy of LM741 Data Sheet ??
2. What Is CMRR ??
3. What is Slew Rate ??
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REFERENCES
http://www.national.com/onlineseminar/2003/opamps_basics/090303_Opamp_Trivia_Notes.pdf
http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/opamp.html#c4