Author: Majid Ahmed

With the emergence of artificial intelligence (AI) applications, edges are using multiple input and output channels to meet the needs of high bandwidth edge processing. The new FPGA mezzanine card (FMC) with low voltage differential signal (LVDS) interface is designed to promote bandwidth transmission.

The lxd31k4 launched by logic-x is a 4-in-4-out card, which provides four A / D channels with a data conversion rate of up to 310 megasamples per second (MSPs) and four D / a channels, each with an original conversion rate of up to 310 MSPs. All eight channels have 16 bit accuracy and provide strong signal-to-noise ratio (SNR) performance. In addition, through up to 4x interpolation set by the user, the card can generate signals with update rates up to 1.24 GHz.

Figure 1 the cassette has a reference design, which can help engineers speed up the development process. Source: logic-x

The card can be integrated into the embedded system as is; It can also be used in the development and prototyping of system on chip (SOC) design. Using LVDS for data interface means that users can integrate the card with FPGA without purchasing and embedding the converter and receiver interface core conforming to jesd204b standard. In addition, the LVDS pin configuration of the card makes it suitable for the high pin count connector on Xilinx development board and most “partial implementations” of FPGA FMC board of logic-x.

In addition to edge processing, logic-x also uses lxd31k4 card for high-speed data acquisition and playback, software defined radio (SDR) and other applications that need broadband conversion between analog and digital domains.

Figure 2 lxd31k4 has been sampled and is expected to be mass produced in the fourth quarter of 2021. Source: logic-x

Logic-x also provides a two in two out version of this card; Lxd31k2 has 16 bit resolution and uses LVDS interface. Both lxd31k4 and lxd31k2 come with reference designs that contain detailed documentation, vivado IP integrator projects, and IP cores that can be controlled by software applications via Ethernet or PCIe.

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