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Yet. I has studying about motor control based on FPGA, and I need 4 analog input or more (support 4 high speed ADC or more).
Thank for your information. I will check ACTEL FPGA. Currently I use Altera FPGA, but I want to find a comparator to do it
First of all you have to specity what you mean by high-speed, high speed in ADC terms can be anything from 1MSPS to 1GSPS, then it all depends on what you want to do with the data after you captured them.
Any FPGA is good for 1MSPS ADCs but there no FPGAs as I know who can support an ADC at 1GSPS without some very special PCB tricks.