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DAQ modules target radar and communication apps

Posted: 30 Sep 2010     Print Version  Bookmark and Share

Keywords:data acquisition module  PCIe  FPGA  XMC  DAQ 

Pentek Inc adds to its Cobalt data acquisition module line with four XMC and four PCI Express (PCIe) modules offering key software radio functions and a sampling frequency of up to 1GHz. All Cobalt modules use Xilinx's Virtex-6 FPGAs for onboard signal processing.

DAQ modules

The XMC-format boards make up the 71xxx series with extended temperature range options for deployed applications such as unmanned aerial vehicle collecting radar and signal intelligence data. The 78xxx boards, using the PCIe format, are meant for desktop PCs and blade servers for R&D and laboratory environments.

The four modules, each available in two formats, consist of the following: 71621/78621 - three 16bit, 200MHz A/Ds, three multi-band DDCs (digital down-converters), two 16bit 800MHz D/As with DUC (digital up-converter) and interpolator; 71630/78630 - one 12bit, 1GHz A/D and one 16bit 1GHz D/A; 71650/78650 - two 12bit, 500MHz A/Ds and two 16bit, 800MHz D/As with DUC; and 71661/78661 - four 16bit, 200MHz A/Ds and four multi-band DDCs.

They all feature a Xilinx Virtex-6 LXT or SXT FPGA fully connected to all data and control paths. The FPGAs come with data multiplexing, channel selection, data packing, gating, triggering, time stamping, memory control and other functions, as well as room for user-defined ones. The modules support a number of Virtex-6 devices to give users a wide choice of device density to use.

Other key features include: synch bus for synchronising multiple modules to increase channel count, VCO sample clock synthesisers locked to an external system reference, PCIe (Gen 2) interfaces for x4 and x8, secondary gigabit serial interface, and modular memory options for QDRII+ SRAM and DDR3 SDRAM intelligent, chaining DMA engines.

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