Redirected from Op-amp
An operational amplifier or op-amp is an electronic circuit module (normally built as an integrated circuit) which has a non-inverting input (+), an inverting input (-) and one output. The output voltage is the difference between the + and - inputs multiplied by the open-loop gain: vo = (vp - vn) * Gopenloop. Since op-amps have uniform parameters and often standardized packaging as well as standard power supply needs, they help in designing an application fast.
A typical circuit symbol for an op-amp looks like this:
Its terminals are:
content moved from Opamp:
Operational amplifier, so called because it allows mathematical operations.
The generic opamp has two inputs and one output.The value of output is based on the difference between the two inputs:output=G*(V2-V1),which G is the multiple constant of the opAmp,V2 and V1 are the two inputs' voltages. The voltage at one of the inputs is inverted, summed with the voltage at the other input, and and the sum is present at the output.
output = non_inverted + inverted
If the output is connected to the inverting input, after being scaled by a voltage divider, then
output = (-K * output) + input
output = 1/(1+K) * input
We have an amplifier.
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