FPGAs

Analogue interface module has multicard synchronisation

5th June 2020
Mick Elliott

The LXD30K0 low latency, wide bandwidth analogue interface FMC (FPGA Mezzanine Card) module has been released by Logic-x, a supplier of off-the-shelf Adaptable Compute Acceleration Platforms (ACAP) and sensor processing modules

The module utilises an ADC (EV12AS350A) and DAC (EV12DS460) from Europe’s Teledyne e2v for the analogue input and output stages and is well suited to electronic warfare systems, radar waveform generators and receivers and advanced digital radio frequency memory (DRFM) applications as well as medical and telecommunications systems.

Providing high performance, 5.4Gsps (Giga samples per second) data sampling at 12-bits resolution, which helps achieve an excellent signal-to-noise ratio (SNR), the LXD30K0 delivers excellent performance in relation to SFDR (Spurious Free Dynamic Range), close-in phase noise.

In addition it has a low latency of 7.2ns on the analogue input and a latency of just 1.2ns on the analogue output.

The use of LVDS connectivity to the host carrier also facilitates an extremely low latency from the RF input to the RF output which can be less than 18ns depending on the carrier used.

The module’s analogue input stage also features a very wide bandwidth of 0.5MHz to 4.8GHz with sampling at 5.4Gsps generating an instantaneous bandwidth of 2.7GHz.

The output bandwidth ranges from 0.5MHz to 6GHz and the instantaneous output bandwidth is 1.35GHz at a sampling data rate of 5.4Gsps.

Including a flexible clock tree generates a very clean, low jitter and low phase clock that is distributed to the ADC and DAC and external synchronisation trigger input, ensures easy integration into single channel systems as well as standalone operation.

For larger systems, it is possible to directly provide the sample clock to the front panel SSMC connector or to synchronise the local clock generator to an external reference clock.

The LXD30K0 also features significant power saving options and advanced power/health monitoring capabilities.

Multi-card synchronisation also enables multiple input, multiple output systems to be built.

The FMC form factor suits both the development of new systems and enables existing host carrier systems to be easily upgraded and the LXD30K0 is compliant with both the VITA 57.1 and VITA 57.4 FMC standards.

“Demanding markets like mil-aero, medical and telecommunications continually push the boundaries of what is possible,” said Erik Barhorst, Managing Director of Logic-X. “At the front end this requires very fast analogue- to-digital and digital-to-analogue converters and, more often than not, these need to offer the lowest possible latency. The LXD30K0 has been designed to meet the challenges presented by these demanding applications by offering best-in-class low latency, high speed and wide bandwidth in an easy-to-implement FMC module.”

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