4DSP公司的AD450是双路125MSPS数字化和波形发生器PMC/XMC，具有取样速率高达125MSPS的双路14位ADC输入通路，以及集成了2x, 4x, 8x 和16x内插滤波器的双路16位高速DAC，非常适合用于MIMO天线发送系统，无线通信接收器，测试测量仪器，马达控制，航空测量仪器，视频和图像算法（DVB-C）以及低功耗医疗MRI设备。AD450还提供了快速存储资源和两块Xilinx Virtex-4 FPGA。本文介绍了AD450的主要特性，以及PMC扩展板的方框图。

AD450 Dual channel 125MSPS digitizer and waveform generator PMC/XMC
The AD450 is a PMC expansion card designed for MIMO and wireless processing systems.

The AD450 features two 14-bit A/D channel inputs sampling up to 125MSPS, and a dual-channel 16-bit high-speed D/A converter with integrated 2x, 4x, 8x and 16x interpolation filters.

The AD450 is the ideal prototyping system to implement flexible and scalable multi-input and multi-output antenna transmitter systems. For instance, it is possible to design a MIMO-based OFDM testbed to simulate or emultate multiple mobile radio communication channels.
The AD450 is a high performance PMC/XMC digitizer module and waveform generator dedicated to digital signal processing applications with high bandwidth and MIMO requirements. The AD450 also offers fast on-board memory resources and two Virtex-4 FPGAs. Up to 4x 2.5Gbps optical tranceivers for serial FPDP or gigabit Ethernet applications are available for communication with external systems (eg, storage system).



主要特性：
A/D and D/A
Two 14-bit ADC channels, 20MHz to 125MHz sampling range
Two 16-bit DAC channels, 20MHz to 160MHz sampling range
Custom Clock and Trigger inputs via external connectors
On board clock generation in steps of 0.5MHz
Ideal for Multiple Inputs Multiple Outputs in a small form factor
FPGA
High speed DSP processing in two Xilinx Virtex-4 ® FPGA
XC4VSX55, XC4VLX40, XC4VLX60, XC4VLX80, XC4VLX100 or XC4VLX160
XC4VFX20 or XC4VFX60 with embedded PowerPC RISC processor
FPGA configuration on-board storage
Off-the-shelf IP cores
FPGA firmware design services available upon request
Memory
2 x 32M x 16 DDR2 SDRAM (128MB)
4 x 2M x 32 QDR2 SRAM devices (32MB)
128Mbit flash device
PCI interface
PCI-X 64-bit 133MHz, 3.3V
PCI-X/PCI 64/32-bit 66MHz, 3.3V
PCI 64/32-bit 33MHz, 3.3V
PCI express 4 lanes
PMC Pn4 64 I/O connected to FPGA A
Measured sustained bandwidth
64-bit 133MHz = 760Mbytes/s
64-bit 66MHz = 450Mbytes/s
32-bit 33MHz = 120Mbytes/s
Front Panel high speed communication

4x 2.5Gbps optical transceivers for sFPDP, Fibre Channel, Gigabit Ethernet and Infiniband applications. Useful for connecting to a remote server or a storage system such as Conduant Streamstor Amazon.
Software Support
FPGA reference design
API, documentation and sample source code
Software utility to program on-board Flash with FPGA configuration data
Device driver for Windows 2000/XP, Linux and VxWorks
Test /demonstration application
Custom FPGA firmware /application /driver development available upon request

应用：
_MIMO baseband transceivers
_Wireless communication receivers
_Test and measurement instruments
_Holographic data storage equipments
_Motor control applications
_Aerospace measurement instruments
_Video and imaging algorithms (DVB-C...)
_Low-power medical MRI equipments

来源：4DSP