A method to correct differential nonlinearities in subranging   analog-to-digital converters used for digital gamma-ray spectroscopy
  The influence on $\gamma$-ray spectra of differential nonlinearities (DNL) in subranging, pipelined analog-to-digital converts (ADCs) used for digital $\gamma$-ray spectroscopy was investigated. The influence of the DNL error on the $\gamma$-ray spectra, depending on the input count-rate and the dynamic range has been investigated systematically. It turned out, that the DNL becomes more significant in $\gamma$-ray spectra with larger dynamic range of the spectroscopy system. An event-by-event offline correction algorithm was developed and tested extensively. This correction algorithm works especially well for high dynamic ranges. 
A. Hennig, C. Fransen, W. Hennig, G. Pascovici, N. Warr, M. Weinert,   A. Zilges
physics.ins-det nucl-ex