  The Front-End Board (FEB) is a key component of the NectarCAM camera, which
has been developed for the Medium-Sized-Telescopes (MST) of the Cherenkov
Telescope Array Observatory (CTAO). The FEB is responsible for reading and
converting the signals from the camera's photo-multiplier tubes (PMTs) into
digital data, as well as generating module level trigger signals. This
contribution provides an overview of the design and performances of a new
version of the FEB that utilizes an improved version of the NECTAr chip. The
NECTAr chip includes a switched capacitor array for sampling signals at 1 GHz,
and a 12-bit analog-to-digital converter (ADC) for digitizing each sample when
the trigger signal is received. The integration of this advanced NECTAr chip
significantly reduces the deadtime of NectarCAM by an order of magnitude as
compared to the previous version. This contribution also presents the results
of laboratory testing of the new FEB, including measurements of timing
performance, linearity, dynamic range, and deadtime.
