Data Acquisition System (DAS) is widely used in different fields of engineering. Mainly this paper describes design and development of multi-channel FPGA based data acquisition system with NAND storage. This system acquires data with different frequencies (different sampling rates), the required pre-conditioning circuits already incorporated in the hardware. This is to implement ADC controller module on FPGA. ADC controller is on FPGA module, which receives data parallel and transfers this data to ADC through SPI protocol. It also generates required clock signals for SPI communications and ADC operation.