Op amp - definition of Op amp by The Free Dictionary
operational amplifier (redirected from Op amp)
Also found in: Medical
(Electronics) a high-gain direct-coupled amplifier, the response of which may be controlled by negative-feedback circuits externally connected
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These op amps
are also pin compatible, so that users can easily adjust amplifier bandwidth as design needs change, providing a clear migration path to select the proper bandwidth versus supply current tradeoff.
You can see that while the op amp
circuit decreases the LED current at high-ambient temperatures, the LED die temperature approaches that of the LED board temperature.
If there were such a thing as a "perfect" op amp
, it would exhibit the following characteristics: infinite input impedance; zero output impedance; infinite gain and bandwidth; zero noise; infinitely fast pulse response, or slew rate; and zero offset, meaning perfect precision at DC.
But, as with most op amps
, there is an optimal ground between power consumption and slew rate; increasing the current partially defeats the purpose of using a rail-to-rail op amp
in the first place.