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power supply of OP amplifier

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psthanh

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Dear all.
I have a problem with the OPM, it's designed for +- 1.65V, but i try to use in +3.3V -GND, all the performance is difference, i thought i have the wrong way when simulate it in single power supply, Please give me some suggestion.
Thank you.
 

psthanh said:
Dear all.
I have a problem with the OPM, it's designed for +- 1.65V, but i try to use in +3.3V -GND, all the performance is difference, i thought i have the wrong way when simulate it in single power supply, Please give me some suggestion.
Thank you.
Click to expand...

Are you aware that in case of powering an opamp with single supply you need additional circuitry for a proper bias point ?
 

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    psthanh

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Thanks sir, i will try, because i dont know the basic, just get the mos size and try to adjust it by using hspice.
 

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