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Can a single-supply op amp output a negative voltage?

Hardware design
Juli 01, 2020 by Natalia 1629

Can a single power supply op amp only output positive pressure? How can you get a negative pressure?

The picture shows an inverting 1 to 1 circuit. The single-power supply op amp can only output positive voltage. If the dual power supply is used, the wave will be normal.

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Mariah Veröffentlicht am July 1, 2020

It is necessary to output a negative voltage from a single power supply, then choose an op amp powered by a negative power supply.

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Lewis Veröffentlicht am July 1, 2020

This is how op amps are used.

The first way:

The input is a positive and negative signal, and the output is a positive and negative signal. Indeed, a negative power supply is required for the op amp.

For example, input -1 to 1V, output -5 to 5V

The second way:

If you need to use a single-supply op amp, you add an offset. The idea is

Input -1 to 1V, output 0-5V. In this way, a single power supply can be used.

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Andrea Veröffentlicht am July 1, 2020

If it is determined that a negative signal is required, it must work with dual power sources before it can output a normal complete signal.

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