Hello, I am now looking for an Operation Amplifer chip able to be a voltage follower, which I need to use as a buffer between my sensor circuit and the digitizer. Can anybody help me?
Since the output impedance of my sensor circuit is about 0.2 Gohm, the follower needs to have a input impedance much higher than that (Maybe a JFET one could work).
The input signal is always sinusoidal, with an amplitude = 1~2V, and a variable frequency = 10KHz~1MHz, and the noise at the output is required to be