Femtoampere amplifier

ABHAY VASHISTHA

Hello all,

I am looking for a high input impedance amplifier. The requirement is to amplify 10^-14 to 10^-13 amp current. Anybody can suggest which IC will work for it?

over 5 years ago

+1 Raymond Zhang1 over 5 years ago

TI__Guru* 77501 points

Hi Abhay,

Without knowing the type of application or requirements, here is a list of the ultra low Ibias or ultra high input impedance amplifiers. LMP7721 is one of the high input impedance op amp in the list of selections.

If you have additional questions, please let us know.

Best,

Raymond

+1 kai klaas69 over 5 years ago

Guru 140200 points

Hi Abhay,

can you tell more about your application? Is it TIA?

A schematic would be helpful :-)

Kai

0 ABHAY VASHISTHA over 5 years ago in reply to kai klaas69

Intellectual 695 points

Hello Kai,

Yes, it is a trans-impedance amplifier. Application is ion chamber current amplification.

+1 kai klaas69 over 5 years ago in reply to ABHAY VASHISTHA

Guru 140200 points

Hi Abhay,

I know that these amplifiers are highly sophisticated. Can you show a schematic?

Kai

0 ABHAY VASHISTHA over 5 years ago in reply to kai klaas69

Intellectual 695 points

Schematic needs to be made, this is a kind of development.

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Femtoampere amplifier