Difference between revisions of "TF EIM Chapt9"
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Revision as of 02:10, 12 April 2011
Operational Amplifiers (Op Amps)
The operational amplifier is monolithic (single chip) integrated circuit composed of transistors, resistors, diodes, and other components.
The small package produces a device with small capacitance and inductance which is superior to assembling the equivalent circuit with individual components.
Op-Amp
the "-" sign indicates the inverting input terminal and the "+" indicates the non-inverting input.
A positive going input voltage at the non-inverting ("+") input produces a positive going output.
A positive going input voltage at the inverting ("+") input produces a negative going output.
In other words the output is in phase when the input is non-inverting and 180 degrees out of phase when the input is inverting.
Equivalent circuit
