Development of CMOS monolithic pixel sensors with in-pixel correlated   double sampling and fast readout
  This paper presents the design and results of detailed tests of a CMOS active pixel chip for charged particle detection with in-pixel charge storage for correlated double sampling and readout in rolling shutter mode at frequencies up to 25 MHz. This detector is developed in the framework of R&D for the Vertex Tracker for a future e+e- Linear Collider. 
Marco Battaglia, Jean-Marie Bussat, Devis Contarato, Peter Denes,   Piero Giubilato, Lindsay E. Glesener