First 4-in-4-out ADC/DAC FMC with LVDS digital interfaces

Logic-X has released what it claims to be the industry’s first 4-in-4-out analog-to-digital (and vice versa) conversion FMC with LVDS interfaces.

Called the LXD31K4, it is perfect for edge processing, high-speed data acquisition and playback, SDR, and other applications necessitating wide bandwidth conversion between analog and digital domains. The card can be included as-is within an embedded system or employed during the development and prototyping of an SoC or mixed-signal ASIC. Furthermore, it is supplied with a reference design to assist engineers in accelerating their development programs.

The use of LVDS for data interfaces in the LXD31K4 means users can easily integrate the card with an FPGA without purchasing and embedding JESD204B-compliant interface cores for converters and receivers. This approach reduces system development/prototyping time and decreases risk within the overall project.

The device offers four A/D channels, each with a data conversion rate of up to 310Msps, and four D/A channels, each with a raw conversion rate of up to 310Msps, which (with up to 4x interpolation – set by the user) can generate a signal with an update rate of up to 1.24GHz.

“With recent advances in machine learning and artificial intelligence, there is an increasing need for high bandwidth edge processing,” comments Erik Barhorst, managing director of Logic-X. “Moreover, multiple input and multiple output channels are required at the ‘edge’ in most cases, and we have launched the LXD31K4 in direct response to market demand.”

Barhorst, the LXD31K4’s chief architect, says the new card was very much created with engineers in mind. The LVDS pin-out is, for example, configured so that it will operate on most ‘partial implementations’ of the high pin count connectors on Xilinx development boards as well as its own FPGA FMC carrier boards.

The reference design provided with the LXD31K4 (and the LXD31K2) includes a Vivado IP integrator project and IP cores that can be controlled from a software application over ethernet or PCIe plus detailed documentation.