snishanth512
Full Member level 3
My project is about acquisition of Photoplethysmography (PPG measured from fingertip) which is a biomedical signal obtained from phototransistor (IR led (940nm) as emitter) .
Output is a current signal.
How can we measure a current signal in the range of micro amps?
So, I need to amplify the current signal. Because current is in the range of micro amps.
I got above output using ICVS amplifier or transresistance amplifier.
I measured using DSO.
How to choose an opamp for this project?
Output is a current signal.
How can we measure a current signal in the range of micro amps?
So, I need to amplify the current signal. Because current is in the range of micro amps.
I got above output using ICVS amplifier or transresistance amplifier.
I measured using DSO.
How to choose an opamp for this project?