AV151, SOSA™-aligned

Presentation of the AV151 VPX board, for high resolution and ultra wideband applications

AV151, SOSA™-aligned

Product overview

The AV151 is part of apissys’ range of Ultra Wideband Radar / ECM / SIGINT solutions based on the VITA47 ECC3, VPX standard.

Fully aligned with the SOSA standard, the AV151 supports a variety of communication protocols, including PCIe, Gigabit Ethernet and a large number of user-defined I/O. Additionally, the AV151 integrates key aspects of the OpenVPX standard, ensuring robust mechanical, electrical, and thermal interfaces. This hybrid approach makes the AV151 a versatile solution that leverages the best of both worlds, being compatible to both OpenVPX and SOSA, to provide enhanced interoperability and flexibility in demanding applications.

This VPX 3U board combines 4x 12-bit ADCs up to 20 Gsps, 4x 16-bit DACs up to 28 Gsps, and 18 GHz bandwidth with a Virtex® Ultrascale+™ FPGA, offering outstanding performance for demanding applications.

AMD Virtex® UltraScale+™ FPGAs offer the highest integration and performance capabilities in a 14 nm/16 nm FinFET node. These FPGAs offer the widest transceiver bandwidth, the highest number of DSPs, as well as the largest on-chip and in-package memory available in the UltraScale™ architecture. In addition, Virtex® UltraScale+™ FPGAs offer numerous power options to achieve an optimal balance between required system performance and the lowest energy envelope.

Target markets of this AV151 VPX board include Phased-Array Radar Transmitter / Receiver, Electronic Warfare ESM /ECM and Broadband Communication.

Benefits & features

  • 4 channels 20 Gsps 12-bit ADC
  • 4 channels 28 Gsps 16-bit DAC
  • Configurable DDC and DUC
  • One Ultra Low jitter clock synthesizer
  • External or internal sampling clock reference
  • User programmable Xilinx® Virtex® Ultrascale+™ VU7P/VU9P/VU13P FPGA
  • 2x 64-bit 8GBytes DDR4 2666 SDRAM
  • SOSA - aligned
  • 48x User-defined IO extension on P2 (optional)


OpenVPX and the SOSA standard are two reference frameworks used for modular systems in the defense and aerospace industries. OpenVPX, based on the VPX standard, focuses on defining mechanical, electrical and thermal interfaces to ensure interoperability between modules from different suppliers. The SOSA (Sensor Open Systems Architecture) standard, on the other hand, goes a step further, integrating not only hardware interoperability aspects but also software specifications and communication protocols, thus promoting greater modularity and flexibility in the development of sensor and processing systems.

Our VPX card intelligently combines these two standards, leveraging the robustness and hardware interoperability of OpenVPX while incorporating the software and communication advances of the SOSA standard.

Equipped with 4 channels of 20 Gsps 12-bit ADC and 4 channels of 28 Gsps 16-bit DACs, the system offers a comprehensive solution for high-speed data acquisition and processing, including Direct Sampling capabilities.


RF Direct Sampling for enhanced performance and scalability

Recent advancements in data converter technologies have led to a substantial increase in the sampling rate, opening up the potential to achieve a bandwidth of several tens of gigahertz for the most recent ADCs and DACs.

Many applications involving RF digitization use a method known as intermediate frequency (IF) sampling, where the analog signal is first converted to a lower intermediate frequency before being sampled by a converter.

Increasing sampling rates allow for direct sampling of the RF signal without the need for additional RF conversion stages, even for signals in the tens of gigahertz range. This approach, known as direct sampling, is now applicable to a wide range of radar and EW frequency bands, including the Ku, K, and Ka bands.

The RF direct sampling method can greatly simplify architectures and enhance the flexibility, scalability, and SWAP-C of equipment.

apissys, expert in wideband conversion solutions, is committed to designing products based on the latest technology to provide direct sampling capabilities for radar and electronic warfare applications.



Tech specs

Form Factor

  • 3U VPX Conduction cooled Vita 48.2, pitch 1.0”

VPX Profile

  • SLT3-PAY-1F1U1S1S1U1U2F1H-14.6.11-0 (SOSA-aligned)

Analog Inputs/Outputs

  • Input coupling: AC
  • Full power bandwidth: > 100MHz to 18 GHz
  • Full scale : +2 dBm TBD
  • Output coupling: AC
  • Full power 100MHz to 14 GHz
  • Full scale : -4 dBm TBD
  • Impedance: 50 Ohm
  • Connectors: SMPM

Analog-Digital Conversion

  • Four channels, up to 20 GHz
  • Resolution: 12 bit
  • Configurable DDC and receive FIR filter
  • Sampling Performances @20Gsps
    • NSD: -150 dBFS/Hz at -20dBFS at 2GHz
    • HD2/HD3: -65 dBFS at -7dBFS at 2GHz
    • IMD3: -75dBFS at -13dBFS at 2GHz

Digital-Analog Conversion

  • Four channels, up to 28Gsps
  • Resolution: 16 bits
  • Configurable DUC and transmit FIR filter
  • Sampling Performances @28Gsps
    • NSD: -164 dBFS/Hz at 0dBFS at 2GHz
    • IMD3: -75dBc at -13dBFS at 2GHz to 10GHz


  • Ultra-low jitter clock synthesizer
  • External or internal sampling clock reference

Virtex Ultrascale+

  • XCVU7P-2FLVB2104I
  • XCVU9P-2FLGB2104I
  • XCVU13P-2FHGB2104I


  • Two banks 64-bit 8GBytes DDR4 2666 SDRAM
  • One 2 Gbit QSPI FLASH memory

Operating Temperature

  • Conduction-cooled ECC3, -40°C to 70°C

Power dissipation (VU13P)

  • +12V: 12.4 A max (150W) TBD
  • +3.3VAUX: 0.6 A max (2W) TBD


  • Conduction cooled : 650gTBD

Board Support Package

  • FPGA example design
  • SW API and examples, Windows 10 64-bits / Linux 64-bits
  • User manuals
  • Quick start guide

VPX interface

-Data plane: one fat pipe DP01 supporting 100GBASE-KR4
-Data plane: one ultra-thin pipe DPutp01 supporting 10GBASE-KR
-Control plane: one ultra-thin pipe CPutp01 supporting 1000BASE-KX.
-Expansion plane: one fat-pipe supporting PCIE GEN3 4x
-Expansion plane: 8 LVDS differential pairs, configurable as 16 single ended LVCMOS

-Empty (SOSA-aligned profile)
-24 LVDS differential pairs, configurable as 48 single ended LVCMOS


Part Number AV151  c  a  b
FPGA FPGA Virtex Ultrascale+ VU7P
FPGA Virtex Ultrascale+ VU9P
FPGA Virtex Ultrascale+ VU13P
VPX P2 Not fitted (SOSA-aligned)
Fitted (48x User-defined IO extension)


Availability: Rev.B June 2025


Environmental Conduction-cooled Vita 47 class ECC3
Operating Temperature -40°C to +70°C
(Card Edge)
Non Operating Temperature -50°C to +100°C
Operating Vibration (Random) 5Hz - 100Hz +3 dB/octave
100Hz - 1kHz = 0.01g2/Hz
1kHz - 2kHz -6 dB/octave
Operating Shock 40g, 11 millisecond,
Operating Relative Humidity 0% to 95% non-condensing
Operating Attitude @ -1,500 to 60,000 ft

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