https://nrc-publications.canada.ca/eng/view/object/?id=9cdc75bc-d398-4f30-bc79-c4de9cc7a3c1
Calibration of charge amplifiers using metrological grade analog-to-digital converters - NRC...
Calibration of charge amplifiers using metrological grade analog-to-digital converters
charge amplifiersdigital converterscalibrationusingmetrological
https://www.kistler.com/SE/en/cp/differential-charge-amplifiers-5183a/P0001436
Differential charge amplifiers | Kistler SE
This is the the Ex-ia version of the 518x differential charge amplifier family which features a very wide amplification range.
charge amplifiersdifferentialkistlerse
https://www.lasercomponents.com/en/product/charge-amplifiers/
Charge Amplifiers - non integrating
The HQA-15M-10T is designed for AC modulated charge sources with an amplifier gain of 10 V/pC and bandwidth 250 Hz to 15 MHz
charge amplifiersnonintegrating