The FmcAdc250M12b2cha is a 2 channel 250MSPS 12 bit ADC card in FMC (FPGA Mezzanine Card) format using an LPC connector. The gain can be set by software in three steps: /-50mV,/-0.5V, /-5V. An advanced offset circuit is used in the front-end design of the ADC board, and allows a voltage shift in the range of/- 5V that is independent on the chosen gain range.