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Partner Product

Model 5x41-420  (Pentek Inc)
General Information Model 5341-420 is a software radio transceiver suitable for connection to HF or IF ports of a communications system. It features two A/D and two D/A converters with built-in support for PCI Express (PCIe) Gen. 2 over the 3U VPX backplane. A unique fabric-transparent crossbar switch bridges numerous interfaces and components on the board with no latency. Also available as the Model 7841-420 (x8 PCIe) version).

Product Highlights

*Complete software radio interface solution *3U VPX form factor *GateFlow Core 420, two high-performance wideband DDCs and interpolation filter, factory-installed *Extended DDC decimation range of 2 to 1,048,576 *Extended DDC bandwidth range of 40 MHz to 76.3 Hz *Extended DUC interpolation range of 2 to 32,768 *Extended DUC bandwidth range of 40 MHz to 2.44 kHz *LVDS clock/sync bus for multiboard synchronizatio

Product Description

Core 420 Wideband Downconverter

Like the GC4016, the Core 420 downconverter

translates any frequency band

within the input bandwidth range down to

zero frequency. A complex FIR low pass

filter then removes any out of band frequency

components. An output decimator and

formatter deliver output data in either real

or complex representation. An input gain

block scales both I and Q data streams by a

16-bit gain term. The NCO provides over

118 dB spurious-free dynamic range (SFDR).

The mixer utilizes four 18x18-bit multipliers

to handle the complex inputs from the

NCO and the complex data input samples.

The FIR filter is capable of storing and utilizing

up to four independent sets of 18-bit

coefficients for each decimation value.

These coefficients are user-programmable

using RAM structures within the FPGA.

Two identical Core 420 DDCs are factory

installed in the FPGA. The decimation settings

of 2, 4, 8, 16, 32, and 64 provide output bandwidths

from 40 MHz down to 1.25 MHz for

an A/D sampling rate of 100 MHz. It also

delivers better stopband rejection than the

GC4016 in combined channel modes.

A multiplexer in front of the Core 420

DDCs allows data to be sourced from either

the A/D converters or from the output of

the GC4016, extending the maximum

cascaded decimation factor to 1,048,576.

Core 420 Interpolation Filter

The interpolation filter included in the

420 Core, expands the interpolation factor

from 2 to 32,768 programmable in steps of

2, and relieves the host processor from performing

upsampling tasks. Including the

DUC, the maximum interpolation factor is

32,768 which is comparable to the maximum

decimation of the GC4016 narrowband DDC.

In addition to the Core 420, all the

standard features of the Model 5341 are

retained including D/A waveform generator

mode, all data routing and formatting, and

delay and transient capture memoryTwo independent internal timing buses

can provide either a single clock or two

different clock rates for the input and

output signals.

Each timing bus includes a clock, a sync,

and a gate or trigger signal. Signals from

either Timing Bus A or B can be selected as

the timing source for the A/Ds, the downconverters,

the upconverters and the D/As.

Two external reference clocks are accepted,

one for each timing bus and two internal

clocks may be used for each timing bus.

Front panel 26-pin LVDS Clock/Sync

connectors allow multiple boards to be synchronized.

In the slave mode, they accept

differential LVDS inputs that drive the clock,

sync and gate signals for the two internal

timing buses.

In the master mode, the LVDS bus can

drive one or both sets of timing signals

from the two internal timing buses for

synchronizing multiple modules.

Up to seven slave 5341-420’s can be

driven from the LVDS bus master, supporting

synchronous sampling and sync functions

across all connected boards.

Web Links

http://www.pentek.com/products/detail.cfm?model=5341-420
http://www.pentek.com/products/detail.cfm?model=5341-420
http://www.pentek.com/products/detail.cfm?model=5341-420

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