[SOLVED] How to reduce noise in opamp

[siddarth.ghaste]

Hi,
How to reduce in noise op-amp, I think noise is coming from power supply.How to suppress it....PLEASE HELP.

 

[barry]

If the noise from your power supply is appearing on your opamp output, you've either got an EXTREMELY noisy power supply or some other issue. Opamps generally have a pretty high power supply rejection on the order of 100dB. You can try adding capacitors from the power supply pins to ground (which you should have done to begin with). You may have an issue with your physical layout. If you post a schematic, that might help us help you.

 

[siddarth.ghaste]

Okay thanks, no issues. I added two capacitors at the supply side,now noise is suppressed.