Now we want to convert the charge acquired by the sensor to a voltage, so how to select a proper amplifier to design a charge integrator amplifier? What parameters are important? Will the Ib, noise, or others affect the performance? Woud you please give me a reference design or an article which describes the details?
On the other hand, if the sensor output with DC offset value, the maximum value is about 1V, Is using ac couple to the charge integrator amplifier a good way? Or can you show me other approach to cancel the dc offset?