| MODEL P/N | SERIES | NUMBER OF LABS/CLBS | SPEED GRADE | NUMBER OF LOGIC ELEMENTS / CELLS | TOTAL RAM BITS | NUMBER OF I/O | VOLTAGE – SUPPLY | MOUNTING TYPE | OPERATING TEMPERATURE | PACKAGE / CASE | SUPPLIER DEVICE PACKAGE |
|---|---|---|---|---|---|---|---|---|---|---|---|
| XC4VLX25-10FFG668I | Virtex-4 SX | 2.688,00 | 0,00 | 24192 Logic Elements | 1,327,104 bits | 448 | 1.14V ~ 1.26V | Surface Mount | Commercial (0°C ~ +85°C) | 668-BBGA, FCBGA | 668-FCBGA (27×27) |
XC4VLX25-10FFG668I Xilinx Virtex-4 LX FPGA – Industrial Grade Logic-Focused Device
The XC4VLX25-10FFG668I is a logic-optimized FPGA from the Xilinx Virtex-4 LX family, designed for applications that require stable digital control, flexible I/O connectivity, and reliable operation in industrial temperature environments.
Unlike the SX series that focuses on DSP workloads, the LX series prioritizes logic density, routing resources, and control-oriented processing, making this device a practical choice for embedded controllers, interface bridges, and communication control logic.
With its -10 speed grade, FFG668 Flip-Chip BGA package, and industrial temperature rating, this FPGA is well suited for long-life industrial and infrastructure platforms.
Key Specifications Overview
Part Number: XC4VLX25-10FFG668I
FPGA Family: Xilinx Virtex-4 LX Series
Speed Grade: -10
Package Type: FFG668 Flip-Chip BGA
Temperature Grade: Industrial (-40°C to +100°C junction)
Logic Resources: Optimized for control and system-level logic
Target Applications: Embedded control and digital interface processing
Design and Integration Considerations
The FFG668 package offers a practical balance between I/O availability and PCB routing complexity. It supports common external memory interfaces, parallel peripheral buses, and multiple control signal connections without excessive board layer requirements.
Virtex-4 LX devices remain widely used in legacy and long-life industrial platforms. The stable Xilinx ISE toolchain and mature IP ecosystem make this part suitable for maintaining existing hardware designs and extending deployed product lines.
For teams upgrading older Virtex-4 LX designs, the XC4VLX25-10FFG668I can often be integrated with minimal schematic changes and firmware adjustments, reducing validation effort and deployment risk.
Contact LXB Semicon for availability, pricing, and technical support.

