ADI HSC-ADC-EVALC高速转换器评估方案

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ADI HSC-ADC-EVALC高速转换器评估方案

作者：时间：2009-11-11 14:46 来源：

ADI公司的HSC-ADC-EVALC高速转换器评估平台是基于Xilinx公司的Virtex-4 FPGA (XC4VFX20-10FFG672C)器件,该FPGA能通过VisualAnalog进行编程,以及能和各种高速数模转换器(ADC)配合.另一个主要器件是Cypress公司的USB器件,它能和主PC进行通信,并提供SPI接口进行配置.该平台支持1.8 V, 2.5 V和3.3 V CMOS以及LVDS接口,并行输入644MSPS SDR和800MSPS DDR,支持多达18位的多路ADC,进行实时的FFT和时域分析,以及分析SNR,SINAD,SFDR和失真等性能.本文介绍了HSC-ADC-EVALC高速转换器评估平台的主要特性,产品亮点以及方框图,系统应用案例和评估平台的详细电路图.

The HSC-ADC-EVALC evaluation platform is based around the Virtex-4 FPGA (XC4VFX20-10FFG672C) from Xilinx, which can be programmed through VisualAnalog to operate with a variety of data converters. Another key component, the Cypress USB device (U3), communicates with a host PC and provides the SPI interface used for configuration.
The HSC-ADC-EVALCZ high speed converter evaluation platform uses an FPGA based buffer memory board to capture blocks of digital data from the Analog Devices high speed analog-to-digital converter (ADC) evaluation boards. The board is connected to the PC through a USB port and is used with VisualAnalog to quickly evaluate the performance of high speed ADCs. The evaluation kit is easy to set up. Additional equipment needed includes an Analog Devices high speed ADC evaluation board, a signal source, and a clock source. Once the kit is connected and powered, the evaluation is enabled instantly on the PC.

HSC-ADC-EVALC主要特性:
Xilinx Virtex-4 FPGA-based buffer memory board
Used for capturing digital data from high speed ADC evaluation boards to simplify evaluation
64 kB FIFO depth
Parallel input at 644 MSPS SDR and 800 MSPS DDR
Supports 1.8 V, 2.5 V, and 3.3 V CMOS and LVDS interfaces
Supports multiple ADC channels up to 18 bits
Measures performance with VisualAnalog
Real-time FFT and time domain analysis
Analyzes SNR, SINAD, SFDR, and harmonics
Simple USB port interface (2.0)
Supports ADCs with serial port interfaces (SPI)
FPGA reconfigurable via JTAG, on-board EPROM, or USB
On-board regulator circuit speeds setup
5 V, 3 A switching power supply included
Compatible with Windows 98 (2nd edition), Windows 2000, Windows ME, and Windows XP
EQUIPMENT NEEDED
Analog signal source and antialiasing filter
Low jitter clock source
High speed ADC evaluation board and ADC data sheet
PC running Windows 98 (2nd edition), Windows 2000, Windows ME, or Windows XP
Latest version of VisualAnalog
USB 2.0 port recommended (USB 1.1 compatible)

HSC-ADC-EVALC亮点:
1. Easy to Set Up. Connect the included power supply along with the CLK and AIN signal sources to the two evaluation boards. Then connect to the PC via the USB port and evaluate the performance instantly.
2. USB Port Connection to PC. PC interface is via a USB 2.0 connection (1.1 compatible) to the PC. A USB cable is provided in the kit.
3. 64 kB FIFO. The on-board FPGA contains an integrated FIFO to store data captured from the ADC for subsequent processing.
4. Up to 644 MSPS SDR/800 MSPS DDR Encode Rates on Each Channel. Multichannel ADCs with encode rates up to 644 MSPS SDR and 800 MSPS DDR can be used with the ADC capture board.
5. Supports ADCs with Serial Port Interface or SPI. Some ADCs include a feature set that can be changed via the SPI. The ADC capture board supports these SPI-driven features through the existing USB connection to the computer without additional cabling needed.
6. VisualAnalog. VisualAnalog supports the HSC-ADC-EVALC hardware platform as well as enabling virtual ADC evaluation using ADIsimADC™, Analog Devices proprietary behavioral modeling technology. This allows rapid compari-son between multiple ADCs, with or without hardware evaluation boards.