  The characterization of laboratory plasma instabilities, magnetic
reconnection and turbulence associated phenomena, require the simultaneous
signal sampling from arrays of magnetic sensors (hundreds or even thousands) to
obtain spatial resolution, with several hundred kHz for time resolution.
Magnetic measurements based on pick-up (Mirnov) coil are quite common in
experimental pulsed devices for plasma research, thanks to their simplicity and
reliability. Being the signal from this type of sensor proportional to the time
variation of the magnetic field ($dB/dt$), it has to be time-integrated to
recover the instant value of magnetic field. Depending on the required
integration time usually either analog integrators or chopped integrators are
used. However these solutions tend to limit the frequency bandwidth in the kHz
range, they are not easy to design and build, and require additional fast
channels to directly acquire the $dB/dt$ signal to recover the plasma dynamic
features at higher frequencies. In this paper we evaluate the feasibility of
using a direct single channel precision ADC to allow the simultaneous
acquisition of $dB/dt$ measurements and to provide the integrated B measurement
by means of digital integration on the new RFX-mod2 device. On this purpose we
interfaced an existing ADC-module to a Xilinx Zynq FPGA, in order to evaluate
the intrinsic noise and to investigate the feasible integration window of this
configuration. The result opens the door to a compact, cost-effective and
reliable acquisition system, usable for simultaneous real-time control and
transient signal recording, scalable from tenths to thousands channels,
applicable to a broad class of pulsed plasma experimental devices.
