AD491 Dual Channel 1GSPS PMC/XMC Digitizer


The AD491 is a high performance PMC/XMC digitizer module dedicated to digital signal processing applications with high bandwidth and complex algorithms requirements. In addition to two 1GSPS (1000MSPS) A/D channels, the AD491 offers fast on-board memory resources and two Virtex-4 FPGAs. Up to 4x 2.5Gbps optical transceivers for serial FPDP or gigabit Ethernet applications are available for communication with external systems (e.g., storage system).

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  • Two ADC channels, 30MHz to 1000MHz (1GHz) sampling range
  • 8-bit data resolution
  • Custom Clock and Trigger inputs via external connectors
  • On board clock generation in steps of 1MHz
  • High speed DSP processing in two Xilinx Virtex-4 ® FPGA
  • XC4VSX55, XC4VLX40, XC4VLX60, XC4VLX80, XC4VLX100 or XC4VLX160
  • XC4VFX20 or XC4VFX60 with embedded PowerPC RISC processor
  • FPGA configuration on-board storage
  • Off-the-shelf IP cores
  • FPGA firmware design services available upon request
  • 2 x 32M x 16 DDR2 SDRAM (128MB)
  • 4 x 2M x 32 QDR2 SRAM devices (32MB)
  • 128Mbit flash device
PCI interface
  • PCI-X 64-bit 133MHz, 3.3V
  • PCI-X/PCI 64/32-bit 66MHz, 3.3V
  • PCI 64/32-bit 33MHz, 3.3V
  • PMC Pn4 64 I/O connected to FPGA A
Measured sustained bandwidth
64-bit 133MHz = 760Mbytes/s
64-bit 66MHz = 450Mbytes/s
32-bit 33MHz = 120Mbytes/s

Front Panel high speed communication FPGA
  • 4FM GUI offers multiple functions including the ability to monitor voltage and temperature; perform memory tests; measure the PCIe bandwidth; update FPGA firmware; and access StellarIP
  • StellarIP available for this product. A simple way to design FPGA firmware with automated code and bitstream generation
  • FPGA reference design
  • API, documentation and sample source code
  • Software utility to program on-board Flash with FPGA configuration data
  • Device driver for Windows 2000/XP, Linux and VxWorks
  • Test /demonstration application
  • Custom FPGA firmware /application /driver development available upon request