Enhanced radiation hardness and faster front ends for the beetle readout chip Por van Bakel, N, van den Brand, J, Verkooijen, H, Bauer, C, Baumeister, D, Hofmann, N, Knopfle, K, Lochner, S, Schmelling, M, Sexauer, E, Feuerstack-Raible, M, Trunk, U, Harnew, N, Smale, N