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Pentek board with 215MHz sampling rates

Posted: 26 Nov 2004 ?? ?Print Version ?Bookmark and Share

Keywords:pentek? vmebus? signal acquisition? processing board? analog-to-digital converter?

Pentek Inc. recently launched a dual-channel 6U VMEbus signal acquisition and processing board with sampling rates to 215MHz.

Featuring some of the fastest 12bit adcs in the market, the company said, its new Model 6822 supports these data rates with several high-speed interface options. Up to four Front Panel Data Port (FPDP II) connectors deliver output data at up to 320MBps each, and a vxs interface provides two 1.25GBps switched serial fabric ports to the VME backplane.

Targeting high-performance DSP tasks, this new product couples its high-speed ADCs to two Xilinx Virtex-II Pro FPGAs, each supported by 16MB of flash and 128MB of SDRAM. Each 128MB SDRAM can be used as a circular buffer digital delay or as real-time transient capture memory.

Each XC2VP50 FPGA provides the equivalent of 6M system gates, allowing users to perform real-time, high-frequency signal processing tasks such as demodulation, convolution, filtering and data analyzing operations on board. According to the company, this can reduce the data rate of off-board traffic in many applications.

A VXS port
A key feature of the Model 6822 is the VXS port on the P0 backplane connector, which makes it one of the first boards in the industry to offer VXS. The port follows the VITA 41 specification for VME backplane switched serial fabrics and supports several different protocols through installation of one of the various fabric IP cores now available. In addition, the initial release of the Model 6822 supports Serial RapidIO (VITA 41.2) and the Xilinx Aurora link layer protocols over the VXS port. There are plans to extend support to include PCI-Express.

The front panel accepts two analog inputs and delivers digital output samples over two FPDP or FPDP II connectors. An optional two-slot version of the card offers two more FPDP or LVDS connectors for digital output data.

As an alternative to the front-panel data connectors, an optional 24-pair LVDS data channel through the P2 backplane connector is also available. Moreover, a front panel sync/timing bus facilitates synchronous, triggered data acquisition across multiple boards. This capability is essential for multi-channel applications such as radar beamforming and direction finding.

The Model 6822 is available in commercial (L0), air-cooled (L1, L2) and conduction-cooled (L3, L4) versions. "These new boards can operate in a broad range of severe environments, including unmanned military reconnaissance vehicles, airborne radars and maritime communications systems, providing the most demanding customers with the same state-of-the-art technology available to commercial users," according to VP Rodger Hosking.

The Model 6822 includes full development tool support for the on-board FPGAs, featuring Pentek's GateFlow FPGA resources. Tools include the GateFlow FPGA Design Kit; the GateFlow IP Core Library; digital receivers and radar pulse compression algorithms; and GateFlow factory installed IP Cores. Pricing for the Model 6822 starts at $8,995. Delivery is 12 weeks ARO.

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