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Quad FET-input operational amplifier

TL074 Working Principle

Learn how TL074 works with an illustrated explanation and practical readings.

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TL074 at a glance

Follow the labeled connections and functional stages

TL074 working principle: illustrated functional stages, basic circuit and connections
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How it works

3 stages · Explore one step at a time

Step 1 / 3

Apply a small difference

Each input stage compares its positive input with its feedback node.

Step 2 / 3

Close each feedback loop

A uses 30 kΩ / 10 kΩ for gain four. B, C and D each connect output to their own negative input.

Step 3 / 3

Respect the signal range

Use the 0 V supply midpoint as signal ground. Check common-mode and output headroom before increasing amplitude.

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