原创 PMC高速输入输出解决方案

PMC<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />9840A+PMC5180A PMC信号输入输出系统解决方案<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

  用于软件无线电收发系统输入输出PMC板卡由3部分组成：ADC输入板卡（PMC9840A），DAC输出板卡（PMC5180A）和PMC载板组成（用户自定义）。系统组成框图如下所示：

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" />

Specifications:

ANALOG INPUTS

No. of Analog Input Channels：       2

Analog Connector Type：            SMA Coaxial, transformer coupled

Input Impedance：                  50 Ohm

Full Scale Rx Input：                ±1Vpp

Max. ADC Sampling Rate：          105 MHz/ch. (simultaneous)

Input Transformer Bandwidth：        2 MHz – 775 MHz (-3 dB point)

      6 MHz – 250 MHz (-1 dB point)

Max ADC Sampling Rate ：          105 MHz/ch (simultaneous)

Min. ADC Sample Rate：             30 MHz/ch. (simultaneous)

ADC Resolution：                   14 bits

Spurious Free Dynamic Range (SFDR) ：Better than 80 dB

Signal-to-Noise Ratio (S/(N+D)) ：     > 67 dB @105 MHz sampling rate

Crosstalk between channels：          > 78 dB

ANALOG OUTPUTS

No. of Analog Output Channels：      2

Analog Connector Type：            SMA Coaxial

Full Scale Tx Output ：              ±1Vpp (50 Ohm source impedance)

Max DAC conversion rate ：         210 MHz/ch (simultaneous)

Min DAC Conversion Rate：         2 MHz/ch (simultaneous)

DAC Resolution：                 14 bits

Spurious Free Dynamic Range (SFDR) ： Better than 70 dB (20 MHz output at 150 MHz conversion rate)

Better than 60 dB (150 MHz output at 210 MHz conversion rate)

Crosstalk between channels ：        > 78 dB

COMMON TO TX & RX

Sampling/Conversion:   Rising edge of sample clock

External trigger:        Sampling/Conversion occurs following rising or falling edge of external trigger

(programmable). Trigger must remain high for at least one clock cycle.

User FPGA Type: Standard:  Xilinx XC4V SX35FFG668-10

Onboard Storage 64 Mbytes of SDRAM

Mechanical PCI Mezzanine Card (PMC) compatible with IEEE P1386.1

User Programmable I/O on Pn4 connector with LVDS support

GENERAL

PCI bus Interface:  PCI 2.2 compliant (64-bit 66MHz), Master/Target Burst Mode (DMA) capable,

with DMA Chaining (Scatter-Gather).

Environmental:

Operating Temp: 0 - +50ºC (at entry point of forced air)

Storage Temp: -40 - +85ºC

Humidity: 90% non-condensing