Re: low noise amplifier for high impedance source

trap). Charged particles rotate between these electrodes and induce an
image charge.

But this isn't really a current source. Charce delivered into a known
capacity means a voltage, isn't it? You also can make a Current measurement
but not by enabling the current flowing through resisitve path. Then you
should use transimpedance amplifiers. TI have niche appnotes discussing
noise in transimpedande amps.

Marte


.

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