BittWare RFX-8440 Card

BittWare RFX-8440 Card is an innovative PCIe data acquisition card that addresses the entire sub-6GHz spectrum. The RFX8440 is ideal for 5G, LTE wireless, phased array RADAR, and satellite communications applications. The device features the latest third-generation Xilinx RFSoC UltraScale+ Zynq ZU43 device. This powerful single-chip adaptable radio platform provides up to 6GHz of direct RF sampling. This RFSoC acquires, processes, and acts on RF signals with features like a multi-element processing system, FPGA, real-time dual-core Arm®, and a second quad-core Arm.


  • FPGA
    • Zynq UltraScale+ RFSoC
      • XCZU43 in an E1156 package
      • Core speed grade -2
    • Contact BittWare for other FPGA options

  • Analog
    • Optimized for L Band: 1GHz - 2GHz
      • Other analog configurations available; contact BittWare
    • 4 x 5 GSPS 14-bit ADCs
      • -40 to 0dBm (default)
    • 4 x 10 GSPS 14-bit DACs
      • -40 to 0dBm (default)
    • Programmable clocks
    • External reference and triggers
    • SSMC style connectors

  • On-board flash
    • Flash memory for booting FPGA
    • Flash memory for ARM bootloader and OS image

  • External memory
    • 16GB DDR4 processing system (ARM) memory with ECC
    • 8GB DDR4 programmable logic memory with ECC

  • External digital interfaces
    • Processing system
      • PCIe Gen2 x1
      • RJ45 Ethernet
      • USB UART
      • USB 3.0
      • Mini DisplayPort

    • Programmable logic
      • Up to 200Gb/s via 8× 25G OCuLink
      • Hard IP support for dual 100GbE and PCIe Gen4
  • Cooling
    • Standard: double-width passive heatsink
    • Optional: double-width active heatsink (with fan)
    • Optional: single-width passive heatsink

  • Electrical
    • On-board power derived from 6-pin AUX connector or optionally from 12V PCIe slot connection
    • Power dissipation is application dependent
    • Typical max power consumption 50W

  • Environmental
    • Operating temperature: 5°C to 35°C

  • Quality
    • Manufactured to ISO9001:2015 IPC-A-610-Class III
    • RoHS compliant
    • CE, FCC & ICES approvals

  • Form factor
    • 3/4-length, standard-height PCIe dual-slot card (x16 mechanical)
    • Supports standalone operation
    • RFX-8440 can be ordered as a TeraBox™ integrated server platform

  • Development Tools
    • FPGA development
      • BittWare provides a basic data capture and replay example utilizing the major interfaces of the product
      • Xilinx Vivado development tools are fully supported for the development of custom designs

    • Deliverables
      • RFX-8440 Analog Data Acquisition Card
      • Data capture and relay example - Full source code
      • 1-year hardware warranty
      • Cable pack (optional)

Flexible 4 Channel Analog In/Out

The RFX-8440 features variable gain down to -40dBm (input). The critical analog circuitry is designed to match the performance needs for a clean signal to/from the RFSoC's 14-bit interfaces. BittWare's high-performance analog PCB design spans three decades as a core strength.

  • Optimized for L Band, other analog configurations available
  • Four ADC channels, 14-bit, 5.0GSPS
  • Four DAC channels, 14-bit, 10.0GSPS
  • Variable gain input: -40 to 0dBm
  • Variable gain output: -40 to 0dBm
  • External reference and triggers
  • Programmable clocks

Single-Chip Adaptable Platform

At the heart of RFX-8440 is the Zynq ZU43 RFSoC. This powerful single-chip adaptable radio platform provides up to 6GHz of direct RF sampling. 

  • Adaptable single-chip radio platform
  • Move RF design to the digital domain
  • Programmable logic for diverse requirements and emerging standards
  • Lower power by eliminating JESD204 interfaces
  • Reduce PCB area vs. discrete solutions
  • Future-proof comprehensive solution
  • Full sub-6GHz support with extended millimeter-wave interfacing and multi-band support


Getting digital data to/from the RFSoC is easy with the OCuLink 8× 25Gb/s interface. Connect to NVMe storage using BittWare's Data Recorder IP, other BittWare FPGA cards for further processing, a CPU host, or a custom interface card.

  • OCuLink Expansion Port, 8× 25Gb/s
  • Hard IP: PCIe Gen4 x8
  • Hard IP: Dual 100GbE
  • Custom lightweight protocols to connect to other FPGA cards
  • Customized Molex connectors/cables as required for your application
  • Additional I/O ports include RJ45 (1GbE), USB 3.0, and Mini DisplayPort

Block Diagram

BittWare RFX-8440 Card


BittWare RFX-8440 Card

RFSoC from Xilinx

Published: 2020-10-15 | Updated: 2022-08-09