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OP AMP circuit applications

OP AMP circuit applications - Operational Amplifier Linear...

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Operational Amplifier Linear Circuit Applications Sattar Hussain [email protected]
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1- Basic Amplifier Concepts A signal amplifier is basically a two-port network whose function is to produce an output signal that is a larger replica of the input signal applied to its input port. where A is a constant referred to as amplifier gain . The above equation determines the amplifier voltage transfer characteristics, i.e., v o -v i relationship ) ( ) ( t Av t v i L = v L (t)
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2- Operational Amplifier Operational Amplifier (op amp) is a high gain active circuit element available in small-size, low-cost, and highly reliable package. It is an amplifier designed to perform mathematical operations of addition , subtraction , multiplication , division , differentiation and integration 3- The open-loop model Ideal op amp behaves as an ideal difference amplifier that amplifies the difference between two input voltages. v o =A V(OL) (v + - v - )=A V(OL) v d A V(OL) =open loop gain
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