using AD8067 as inverting amplifier

Hi Jino,

I am designing a biosensor which detects particle by sensing change in resistance thus change in input current. My normal sensor resistance is 242100/n ohm where n ranges from 1 to 20. Resistance change due to passing particle is in the range 1 to 300 ohm. This change in resistance will be superimposed on to my original sensor resistance. Small change in resistor causes small change in current. My feedback resistance needs to be very high so that I can get a reasonable amplification at the output and detect the change. Also amplifier noise needs to be very low. I hope it answers your question.

What is your suggestion?

Thanks.

Niloy.

Hi Jino,

I am designing a biosensor which detects particle by sensing change in resistance thus change in input current. My normal sensor resistance is 242100/n ohm where n ranges from 1 to 20. Resistance change due to passing particle is in the range 1 to 300 ohm. This change in resistance will be superimposed on to my original sensor resistance. Small change in resistor causes small change in current. My feedback resistance needs to be very high so that I can get a reasonable amplification at the output and detect the change. Also amplifier noise needs to be very low. I hope it answers your question.

What is your suggestion?

Thanks.

Niloy.