Houston. Tex.VMETRO Inc. has developed two high-speed analog input XMC modules with the latest generation Xilinx Virtex-5 FPGA. The AD3000 is a single channel 3GSPS ADC, and the AD1500 is a dual channel 1.5GSPS ADC.
The modules' analog input uses either a National Semiconductor ADC083000 or ADC081500 8-bit converter. Both designs share a common FPGA back-end with either a Virtex-5 SX95T or LX110T FPGA and are directly connected to the analog input. This combination of high-speed analog input and high-performance FPGA processing is ideal for demanding real-time applications such as Electronic Counter Measures (ECM), Radar and Telecommunications.
An LVPECL trigger input, an LVPECL output, an LVTTL output and the sample clock input are provided on the front panel. This connectivity allows the AD3000 and AD1500 to be operated in a range of modes, including multi-board synchronous sampling.
The FPGA is connected to two 8-Mbyte memory banks of QDRII SRAM capable of accepting the incoming data at full speed from the ADC, and two 128-Mbyte banks of DDR2 SDRAM. Although the use of these memories is defined by the application, they can be used to help maximize the FPGA's DSP processing ability and provide large data buffers. FPGA reconfiguration is stored in local FLASH memory.
The PCI-X interface can be used to send commands to the FPGA to reconfigure itself from a file stored in this FLASH. Alternatively, a JTAG header is provided for code development under the ChipScope Pro development tool chain.
Host software support includes Windows, VxWorks and Linux, including drivers for high-speed DMA access between the XMC and host CPU, FPGA reconfiguration and diagnostics.
DatasheetsAD3000 and AD1500.
VMETRO Inc., 1-281-584-0728, www.vmetro.com