In order to implement parallel readout of all DRS4 channels, an 8 channel ADC is required. The pinout of the DRS4 chip is matched to the AD92x2 family of 8 channel ADCs from Analog Devices. Therefore the AD9212 ADC was chosen, which offers 10-bit resolution at sampling speeds up to 65 MSPS. When implementing continuous sampling of the transparent mode output, the Nyquist-Shannon sampling theorem has to be considered. In this case, since the transparent mode bandwidth is 50 MHz, a sampling rate of at least 100 MSPS is required, which is more than one single ADC can deliver. To maximize the information content, we use two ADCs in parallel, being clocked 180 degrees out of phase. Since the AD9212 chip has a differential clock input, a 180 degree phase shift is realized by simply flipping the positive and negative line on the printed circuit board (PCB). Fig. 4 illustrates the solution. Careful PCB design minimizes the clock skew between the two ADCs and ensures the ADCs are clocked with a phase of 180 degrees. In the FPGA, the two data streams from the ADC are deserialized and interleaved, yielding 120 MSPS if the ADCs are run at 60 MSPS each.