Op-Amp (Operational Amplifier)

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Presentation transcript:

Op-Amp (Operational Amplifier)

Inside of an op-amp… How many transistors do you see?

What is an op-amp?

Comparator

Op-Amp (Comparator) and LDR

Voltage follower (V out = V in )

An op-amp draws very little current (has an almost infinite input impedence) which makes it very useful in voltage dividers.

Amplifier (Gain = 2)

Amplifier (Gain = 5.55)

Unipolar and Bipolar supply

Inverter (Gain = -1) 1k

Inverting Amplifier (Gain = -2) 1k 2k

Uses of Op-amps: 1.Voltage follower (buffer) 2.Comparator 3.Non-inverting amplifier 4.Inverting amplifier 5.Schmitt Trigger 6.Differentiator 7.Integrator 8.Summing Circuits 9.Current-to-Voltage Converter 10.Logic Gates

Offset Null

TDA2822 Dual Power Amplifier

TDA2822

Inside of a TDA2822

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