The 71690 RF tuner and digitizer module is capable of directly receiving and digitizing signals in the 925 MHz to 2175 MHz (L-band) frequency range with a dynamic range of -75 dBm to 0 dBm. The MAX2112 direct-conversion tuner IC integrates variable-gain amplifiers, dual downconverting mixers, and configurable-bandwidth low-pass filters to produce baseband analog in-phase (I) and quadrature (Q) signals for digitization.

Dual 16-bit, 200 MHz ADCs synchronously sample the I and Q signals, passing them to a Xilinx Virtex-6 FPGA for processing tasks such as demodulation, decoding and decryption.

The board supports a variety of FPGA options (LX130T, LX240T, LX365T, SX315T and SX475T) and it has four independent memory banks providing a capacity of up 2 GB of DDR3 SDRAM for applications requiring deep memory, or up to 32 MB of QDRII+ SRAM for applications requiring fast random access.

The module's external interfaces include a Gen2 PCI Express bus (x8) for native connection to the host system for control and data transfer. In addition, the module offers application-specific options for installation of 20 LVDS pairs for general-purpose input/output and four gigabit interfaces to support serial protocols.

The RF subsystem can accept an external reference signal or an optional on-board crystal oscillator for its tuning reference. Internal timing generators provide the module's ADC sample clock, or users can select an external reference that, along with triggers and other control inputs, allow synchronized operation across multiple modules.

Software IP for the on-board Virtex-6 FPGA provides customers with a combination of turnkey and custom functionality. The board ships with the FPGA configured to provide data acquisition, synchronization, triggering, and memory control as well as a test signal generator and control of the RF receiver tuning and bandwidth for a complete baseband signal receiver solution. The additional space available even in the smallest FPGA option also provides users ample opportunity to add their own IP using Pentek's GateFlow Design Kit.

Specification:

Complete radar and software radio interface solution

Supports Xilinx Virtex-6 LXT and SXT FPGAs

L-Band RF tuner

Two 200 MHz 16-bit A/Ds

Up to 2 GB of DDR3 SDRAM or 32 MB of QDRII+ SRAM

Sample clock synchronization to an external system reference

LVPECL clock/sync bus for multi-module synchronization

PCI Express (Gen. 1 & 2) interface up to x8 wide

VITA 42.0 XMC compatible with switched fabric interfaces

User-configurable gigabit serial interface

LVDS connections to the Virtex-6 FPGA for custom I/O

Please refer to the product datasheet below for Installed FPGA IP Module details

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