The new FMC+ standard is nearing release, and the first products are showing up. The Annapolis Micro Systems single-channel 5.0 GSps 10-Bit ADC 12-Bit DAC WFMC+ card was specially architected for latency-sensitive applications where every nanosecond counts, as with Digital Radio Frequency Memory (DRFM) devices in sophisticated Electronic Warfare (EW) systems. It features Analog-to-Digital Conversion (ADC) of 10 bits and Digital-to-Analog Conversion (DAC) of 12 bits, running at a sample rate of 400 MSps to 5,000 MSps.
This rugged, ultra-low-latency card offers ADC SMA input to DAC SMA output under 15 ns in digital bypass mode and under 23 ns in fabric space mode.
The board support interface, which is available for VHDL or Open Project Builder, includes a built-in bypass delay that can be from 0 to 124 ADC sample clock periods. This allows the user to “walk” the latency out from the minimum digital bypass mode latency to slightly beyond the fabric space latency, providing for a smooth transition between the two modes.