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OPA858: bode diagram

Part Number: OPA858

Hello,

I have a question about the bode plot of my circuit. 

Can anyone explain to me why the bode diagram of the single supply circuit is only negative? The circuit does not seem to be instable when running some tests though.

(I adjusted the resistor values to the output voltage characteristics of the OPA858 as shown in the datasheet in comparison to the dual supply version)

In the data sheet the bode diagram is only shown for +-2.5V supply voltage, not for single supply.

Kind regards,

Sonja