The XCKU025-2FFVA1156I is a high-performance field programmable gate array (FPGA) from AMD Xilinx, part of the Kintex® UltraScale™ family. Built on a 20nm process node, this device delivers an exceptional balance of signal processing performance, transceiver bandwidth, and cost-efficiency — making it an ideal choice for mid-range embedded computing, wireless infrastructure, test and measurement, and data acquisition applications.

This guide covers complete specifications, key features, ordering information, and typical use cases for the XCKU025-2FFVA1156I to help engineers make informed design decisions.

---

What Is the XCKU025-2FFVA1156I?

The XCKU025-2FFVA1156I is a member of Xilinx’s Xilinx FPGA Kintex UltraScale series — a family specifically designed to offer the best price-to-performance ratio at the 20nm technology node. The “2” in the part number designates Speed Grade 2, the “-I” suffix indicates an Industrial temperature range (−40°C to +100°C junction temperature), and “FFVA1156” refers to the 1156-ball Fine-pitch Flip Chip Ball Grid Array (FC-BGA) package.

This device is suited for designs that require high DSP throughput, large on-chip memory, and multi-gigabit serial connectivity without the cost overhead of a full Virtex-class device.

---

XCKU025-2FFVA1156I Key Specifications at a Glance

---

XCKU025-2FFVA1156I Detailed Architecture & Features

Configurable Logic: CLBs and LUTs

The XCKU025 contains 18,180 Configurable Logic Blocks (CLBs), each comprising eight 6-input Look-Up Tables (LUTs) and associated flip-flops. This gives a total of 145,440 LUTs and 290,880 flip-flops, providing substantial capacity for complex digital logic, state machines, and custom data paths.

Each LUT can also be configured as a 32-bit distributed RAM or shift register, adding flexible on-fabric memory options beyond dedicated block RAM.

DSP48E2 Slices for High-Speed Signal Processing

The XCKU025-2FFVA1156I integrates 1,152 DSP48E2 slices, each featuring a 27×18 signed multiplier, 48-bit accumulator, pre-adder, and wide XOR function. At Speed Grade -2, DSP48E2 slices achieve a maximum operating frequency of 661 MHz, delivering up to 7,297 GMAC/s of peak multiply-accumulate performance. This makes the device well-suited for digital signal processing chains including FIR/IIR filters, FFTs, and forward error correction (FEC).

Block RAM and On-Chip Memory

Block RAMs support true dual-port operation, built-in FIFO logic, and optional ECC. At Speed Grade -2, block RAM operates at up to 585 MHz, supporting high-bandwidth data buffering, FIFOs, and lookup table acceleration.

GTH High-Speed Serial Transceivers

The XCKU025-2FFVA1156I provides 12 GTH transceivers supporting line rates from 500 Mb/s up to 16.3 Gb/s in the FFVA1156 package. These transceivers are arranged in groups of four (Quads), sharing a QPLL for low-jitter clock generation while each channel also includes a dedicated CPLL for flexibility.

The 12 GTH channels deliver a total aggregate bandwidth of 391 Gb/s (full duplex), supporting protocols such as PCIe Gen3, 10GbE, CPRI, JESD204B, and custom serial links.

Integrated Hard IP Blocks

Clock Management and I/O

Each Clock Management Tile (CMT) in the XCKU025 pairs one Mixed-Mode Clock Manager (MMCM) with one Phase-Locked Loop (PLL), enabling precise clock synthesis, phase shifting, and dynamic reconfiguration. The device includes 312 maximum user I/Os in the FFVA1156 package, organized into High-Performance (HP) banks supporting I/O voltages from 1.0V to 1.8V with differential I/O and Digitally Controlled Impedance (DCI).

---

Part Number Decoder: Understanding XCKU025-2FFVA1156I

Understanding the Xilinx part number syntax helps confirm the exact variant for your design:

---

Operating Conditions and Electrical Characteristics

Recommended Operating Voltages

Temperature and Thermal Ratings

The FFVA1156 package includes a heat spreader lid that improves thermal transfer to external heatsinks, making thermal management more straightforward in high-utilization designs.

---

XCKU025-2FFVA1156I vs. Related Kintex UltraScale Devices

The XCKU025 is the entry-level device in the Kintex UltraScale family. The table below compares it with adjacent family members sharing the same FFVA1156 package for migration planning:

Because the FFVA1156 package uses a common 1.0mm ball pitch footprint across multiple Kintex UltraScale devices, the XCKU025 PCB layout is pin-compatible with larger devices like the XCKU035 and XCKU040, enabling a straightforward design migration path without PCB respins.

---

Supported Development Tools

The XCKU025-2FFVA1156I is fully supported by AMD’s Vivado Design Suite, which provides synthesis, implementation, simulation, and in-system debugging capabilities. Because this device is not in the entry-level device tier, it requires Vivado Design Edition or Enterprise Edition — it is not supported by the free WebPACK license tier.

---

Typical Application Areas

The XCKU025-2FFVA1156I is deployed across a broad range of demanding applications:

• Wireless Infrastructure — Baseband processing for 4G/5G RRH and BBU designs using CPRI and JESD204B over GTH transceivers
• Test and Measurement — High-speed data acquisition, arbitrary waveform generation, and logic analysis instruments
• Video and Image Processing — Multi-channel 4K video pipeline processing with high LUT-to-DSP ratios
• Aerospace and Defense — Industrial temperature grade makes this device suitable for rugged embedded computing platforms
• Data Center Acceleration — PCIe Gen3 ×8 hard IP enables SmartNIC and data compression acceleration cards
• Medical Imaging — DSP-intensive reconstruction pipelines for ultrasound and CT imaging systems
• Communications — Backplane interconnect, optical transport, and forward error correction

---

Ordering Information

---

Frequently Asked Questions

Q: What is the difference between XCKU025-2FFVA1156I and XCKU025-2FFVA1156E? The “-I” suffix denotes Industrial temperature range (−40°C to +100°C junction temperature), while “-E” denotes Extended commercial range (0°C to +100°C). All other electrical specifications are identical.

Q: Is the XCKU025-2FFVA1156I pin-compatible with the XCKU040? Yes. Both devices share the FFVA1156 package footprint with 1.0mm ball pitch, allowing PCB-level migration between devices in this package sequence.

Q: What PCIe configuration does the XCKU025 support? The XCKU025 supports PCIe Gen3 ×8 via its integrated hard IP block, leveraging GTH transceivers for the physical interface.

Q: Which Vivado license is required? Kintex UltraScale devices require Vivado Design Edition or Enterprise Edition. The free WebPACK edition does not support this device family.

Q: What is the maximum GTH transceiver data rate in the FFVA1156 package? In the FFVA1156 package, GTH transceivers support line rates up to 16.3 Gb/s.

---

Summary

The XCKU025-2FFVA1156I is a capable, cost-effective mid-range FPGA that brings Xilinx’s proven UltraScale architecture to applications requiring high DSP throughput, multi-gigabit serial connectivity, and generous on-chip memory. Its 20nm process, Industrial temperature rating, and FFVA1156 package with a clear device migration path make it a compelling choice for engineers designing next-generation wireless, instrumentation, and embedded computing systems.