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inverting amplifier with 2.2k between + and -

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ahgu

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I saw the opamp with single supply 15v. just an inverting configuration.
The funny thing is the there is half-voltage biasing, but just 2.2k across + and - input. What is the logic? Is this a good way to use the single supply?

-ahgu
 

Post a circuit or give us a link. Your descrioption is not enough.
 

normal inverting? so output is connected to + terminal and input is connected to -? with 2.2k between them.. hmm what is the size of feedback resistor from output to + terminal? sounds like offset nulling, but try to post the data sheet here, or at least the circuit you ask about.
 

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