PDA16-20/60* – Xilinx Virtex-4 FX20/FX60 FPGA DSP High-Speed Digitizer
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- Customizable Xilinx Virtex-4 FX20 or FX60 FPGA DSP
- Virtex-4 FX20 FPGA provides 19,224 logic cells / 1,224 kbits block RAM / 32 DSP slices / 1 Power PC
- Virtex-4 FX60 FPGA provides 56,880 logic cells / 4,176 kbits block RAM / 128 DSP slices / 2 Power PCs
- FPGA DSP Packages with Fixed Capabilities for FFT Real-Time Processing
- FPGA DSP Packages with Programmable Capabilities to allow for User Implementation of Custom In-Line DSP
- 2 Analog Channels at up to 160 MHz Sample Rate per Channel
- 16 Bits of A/D Resolution
- Bandwidth from DC to 700 MHz
- 512 Mebgabyte of On-Board Memory
- 640 MB/s Continuous Transfer Over PCI-X Bus
*Note: Legacy Product Model
Signatec's PDA16 digitizer enables users to add customized digital signal processing into the output data flow via Xilinx® Virtex FPGAs with embedded PowerPC processors. Standard development environments can be used to program for this device, such as Xilinx ISETM and System Generator with MATLAB software tools.
To accommodate its customers' varied performance requirements, Signatec designed the PDA16 to utilize the Virtex-4 FX20 (standard) or FX60 device, delivering a processing performance range from 19,224 logic cells / 1,224 kbits block RAM / 32 DSP slices / 1 Power PC to 56,880 logic cells / 4,176 kbits block RAM / 128 DSP slices / 2 Power PCs, respectively. Processed data results can be sent to the PC or across the PDA16 SAB bus to other system device.
Signatec's PDA16 FPGA firmware development kits are available with either fixed real-time DSP capabilities for FFT processing or for custom programming by the user. FPGA packages that allow for custom programming includes a programmer's manual that provides detailed information needed to create and download user defined firmware to the PDA16 along with hooks and source code examples to simplify this task. Xilinx ISE software version 10 or higher is required for customers creating custom logic.
The PDA16 is a dual channel waveform capture board that provides a remarkable combination of high speed and high resolution sampling along with a very large memory capacity. Signal frequencies up to 700 MHz can be accurately captured either in baseband or in higher order Nyquist zones using under-sampling techniques.
The PDA16 is a PCI/PCI-X 64-bit compatible board equipped with standard 'Plug and Play' features common in PCI systems. The entire 512 MB memory may be used as an exceptionally large FIFO for acquiring data directly to either the SAB or PCI bus continuously non stop. In either Buffered Acquisition Mode (where the 512 RAM FIFO is used) or Data Transfer Mode it is capable of sustaining 500 megabyte/sec transfers over the SAB and 640 megabyte/sec transfers over the PCI-X bus. Significant test data has shown that recordings with this large FIFO buffering the recording process can be continuous at the card's full sampling rate even when operating in traditional non real-time environments such as the Windows operating system.
The Signatec Auxiliary Bus (SAB) allows for the high-speed transfer of data to fast processor boards, such as Signatec's PMP1000, or other peripherals, independent of the host PCI-X bus. In addition to facilitating data transfers, the SAB can be used for operational control as well.
The PDA16 was designed to maximize the quality of the captured signal in terms of signal-to-noise ratio and spurious-free dynamic range over a very wide frequency range. Six voltage ranges are implemented with full scale input levels from 267 mV to 2.5 volts with two of these ranges implementing a transformer coupled input direct to the ADC for best possible signal performance (2.5 V and 1.67 V).
A frequency synthesized clock allows the ADC sampling rate to be set to virtually any clock value up to 160 MHz, offering maximum flexibility for sampling rate selection. This frequency selection flexibility comes at no cost to the acquisition clock quality/performance when locked to either the onboard 10 MHz, 5 PPM reference clock or to an externally provided 10 MHz reference clock. The ADC may also be clocked from an external clock source.
Up to three PDA16 boards may be interconnected in a Master/Slave configuration via a ribbon cable that connects at the top of the board. In this configuration the clock and trigger signals from the Master drive the Slave boards so that data sampling on all boards occurs simultaneously. The PDA16 supports single shot, segmented, and pretrigger triggering modes.
PDA16 Full Data Sheet
Update: Revision 1.04 - 04/03/2012
File Size: 1.08 MB
|External Signal Connections|
|Analog Input, Channel 1:||SMA|
|Analog Input, Channel 2:||SMA|
|Full Scale Voltage Ranges:||2.50V, 1.67V, 1.00V, 667mV, 400mV, 267mV|
|Bandwidth:||700 MHz (with no LP filter)|
|Signal Type:||digital, TTL signal level|
|Internal Synthesized Clock|
|Frequency Range:||45.0 - 170 MHz|
|Resolution:||better than 5 PPM|
|Accuracy:||better than 5 PPM|
|Unsettable Ranges:||128.9-129.8, 140.6-142.8, 154.7-158.7 MHz|
|Signal Type:||sine wave or square wave|
|Frequency:||10 MHz to 160 MHz|
|Amplitude:||100 mV p-p to 2.0 V p-p|
|Post ADC Clock Divider|
|Divider Settings:||1, 2, 4, 8, 16, 32|
|Post ADC Clock Divider|
|Divider Settings:||1, 2, 4, 8, 16, 32|
|Internal:||10.0 MHz, +/- 5 ppm max.|
|External:||10.0 MHz, +/- 50 ppm max (required for lock)|
|Type:||TTL Logic Level|
|Max. Frequency:||160 MHz|
|Suggested Load:||1k ohms|
|Aperture Jitter:||0.07 pS typical|
|Clock Rate:||1.0 to 160 MHz|
|Post Trigger:||single start trigger fills active memory|
|Pre-Trigger:||single trigger stops acquisition|
|Segmented:||start trigger for each memory segment|
|Pre-Trigger Samples:||samples prior to trigger are stored; Single Channel: 8k max.; Dual Channel: 4k max per channel|
|Delayed Trigger:||delay from trigger to data storage; Up to 64k digitizer clock cycles|
|Active Size:||Up to 256 Megasamples|
|Segment Size:||Up to 128 Megasamples|
|Segment Re-Arm Time:||150 nanoseconds|
|Addressing:||DMA transfers from starting address|
|PCI Controller Address:||64 bytes, Plug and Play selected|
|Control/Status Registers:||32 bytes, Plug and Play selected|
|Signatec Auxiliary Bus|
|Data Transfer Modes:||Block|
|Data Transfer Rates:||Up to 640 MB/s max @ 64 bits|
|Data Direction:||Output only|
|+12V:||400 mAmps max.|
|+5V:||1.5 Amps max.|
|+3.3V:||2.3 Amps max.|
|Absolute Maximum Ratings|
|Analog Inputs:||5 volts peak to peak|
|Trigger Inputs:||-0.2 to +4.0 volts DC|
|Clock Input:||5 volts peak to peak|
|Ambient Temperature:||0 to 50C|