Multiband receiver fits into a PCI slot
By Warren Webb -- EDN, May 1, 2003
Pentek has introduced a 16-channel, multiband digital receiver for radar-pulse-analysis, satellite-communications, and signal-intelligence applications. The Model 7631 comprises a digital-receiver PMC (PCI Mezzanine Card) and a PMC-to-PCI adapter, and the company assembles and tests it as a single PCI board (Picture). A 14-bit AD6645 ADC, which can operate at sample rates as high as 105 MHz, transformer-couples and digitizes each of the board's two analog inputs.
The board also includes four Graychip GC4016 quad-multiband digital-receiver chips, driven by the 100M samples/sec from both ADCs. A crossbar switch inside each GC4016 allows all 16 onboard receiver channels to independently select either of the two ADC inputs. Each receiver chip includes four receiver channels that can independently center frequency tuning from dc to 50 MHz with output bandwidths ranging from 4 kHz to 10 MHz.
The board includes a factory-configured FPGA to perform standard modes of data packing, formatting, and channel selection. An optional GateFlow FPGA designer's kit is available for custom applications to take advantage of unused resources inside the FPGA. Prices for the Model 7631 start at $6795, and it is available within eight to 10 weeks after receipt of order.
Pentek Inc, 1-201-818-5900, www.pentek.com.
