Digital Converters Family for Software Radio
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This document summarizes a universal digital converter family for software radio applications. It offers two front-end configurations: wide-band direct sampling and narrow-band channelized. In wide-band mode, samples are available through a FIFO for FPGA/DSP processing. In narrow-band mode, DDC/DUC chips are used to select channels and reduce bandwidth. The family includes products with up to 4 or 16 channels that sample at 80Msps with 14-bit resolution and 500MHz bandwidth, and interface with FPGAs and PCI buses. Open APIs and sample code are provided for developers.
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Digital Converters Family for Software Radio
- 1. Digital Converters Universal digital converter family for wide-band and phased array software radio applications Front-end BUS CH4 Sampling CLK for converters FPGA LOGIC and DSP resource SCLK OSC 10MHz CLK DRV X2/X4/X8 Sampling CLK External TRG in/out PCI HOST Interface LCLK OSC 33MHz External CLK in/out Dedicated data connection FPGA Analog driver DAC Analog preamp ADC Local CLK PCI BUS connector The members of the converter product family are based on the same digital back-end base structure. We offer two basic conversion frontend structure for wide-band and channelised applications. FIFO FPGA In wide-band the samples are available trough a FIFO for the FPGA/DSP processing elements RX CH3 FIFO Full bandwidth FPGA CFG Control BUS ADC Config EEPROM DDC FPGA Reduced bandwidth TX CH2 MCU TX Different conversion front-end configurations Analog preamp Analog driver DAC DUC FPGA NARROW-BAND (Channelized) RS-232 serial control interface I2C WIDE-BAND (Direct sampled) PROM FPGA JTAG JTAG RX Control EEPROM CH1 In narrow-band (channelised) version DDC/DUC chips are used for selecting the required channel and reduce the bandwidth Members of the converter family DCU-214: DCUMax. 4 analog I/O channels Max. 2 independent channels 1 clock I/O channel 80Msps/14bit sampling 500MHz bandwidth Xilinx Spartan II FPGA 32bit/33MHz PCI interface 133Mbyte/sec signaling rate DCU-214: DCUMax. 4 analog I/O channels Max. 4 independent digital tuner 1 clock I/O channel 80Msps/14bit sampling 500MHz bandwidth Xilinx Spartan II FPGA 32bit/33MHz PCI interface 133Mbyte/sec signaling rate DCU-304: DCUMax. 4 analog I/O channels 1 clock I/O channel 80Msps/14bit sampling 500MHz bandwidth 80 bit front-end bus frontXilinx Virtex II FPGA 64bit/66MHz PCI interface 528Mbyte/sec signaling rate DRU-304: DRUMax. 16 independent analog I/O channels 1 clock I/O channel 80Msps/14bit sampling 500MHz bandwidth Xilinx Virtex II FPGA Max. 16 independent digital tuner Software support Open application Programming Interface (API) and sample code are available for developers www.sagax.hu Matlab based time and frequency domain analiser tool Sagax, Ltd. Ltd. Haller u. 11-13. 111096 Budapest, HUNGARY