The XCKU040-3FFVA1156I is a high-performance, industrial-grade Field Programmable Gate Array (FPGA) from AMD Xilinx’s Kintex® UltraScale™ family. Featuring a -3 speed grade and an extended industrial temperature range, this device delivers the fastest clock performance in the XCKU040 series — making it the go-to choice for demanding signal processing, 100G networking, medical imaging, and defense applications. Built on a proven 20nm process node, the XCKU040-3FFVA1156I combines high logic density, next-generation transceivers, and ASIC-class routing in a 1156-pin FCBGA package.

If you are evaluating a Xilinx FPGA for your next design, this guide provides everything you need — full specifications, pin descriptions, application use cases, and ordering information.

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What Is the XCKU040-3FFVA1156I?

The XCKU040-3FFVA1156I belongs to the Kintex UltraScale product family — AMD Xilinx’s mid-range FPGA lineup optimized for the best price-to-performance-per-watt ratio at 20nm. The part number breaks down as follows:

The “I” suffix distinguishes this part from its commercial-grade counterpart (the XCKU040-3FFVA1156E), providing extended thermal robustness for harsh operating environments.

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XCKU040-3FFVA1156I Key Specifications

Core Device Specifications

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Logic & Memory Resources

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Clocking & Frequency

The -3 speed grade delivers an 850 MHz maximum operating frequency — a notable step up from the -2 grade (725 MHz) and -1 grade, making the XCKU040-3FFVA1156I ideal for clock-critical designs where timing margins are tight.

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Power Supply Requirements

The narrow core voltage window requires a precise power management solution. Designers should use a dedicated FPGA power controller such as the Xilinx Power Advisor to validate rail sequencing and transient response for the XCKU040-3FFVA1156I.

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Transceiver Specifications

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I/O & Package Details

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XCKU040-3FFVA1156I vs. XCKU040 Speed Grades Comparison

Note: The “E” suffix variants (e.g., XCKU040-3FFVA1156E) are commercial-grade parts rated for 0°C to +85°C. The “I” suffix provides the full –40°C to +100°C industrial range.

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Architecture Highlights: Why UltraScale Matters

The Kintex UltraScale architecture was the industry’s first ASIC-class All Programmable platform at 20nm. Here is what sets it apart:

ASIC-Like Clocking

UltraScale devices eliminate the clock skew penalties found in traditional FPGA clock trees by using a next-generation clocking architecture. This dramatically improves timing closure at high utilization — a critical benefit when pushing the XCKU040-3FFVA1156I to its 850 MHz ceiling.

Advanced Routing Architecture

The UltraScale interconnect fabric reduces routing congestion by approximately 40% compared to the 7 Series, enabling higher effective utilization while maintaining predictable timing.

High-Density DSP Processing

With 1,920 DSP48E2 slices, the XCKU040-3FFVA1156I can deliver exceptional MAC throughput for applications such as radar signal processing, FEC engines, software-defined radio (SDR), and image processing pipelines.

Next-Generation GTH Transceivers

The integrated GTH transceivers run at up to 16.375 Gb/s and support automatic channel bonding, 8b/10b and 64b/66b encoding, and CDR (Clock and Data Recovery), enabling clean backplane and chip-to-chip communication without external PHY components.

Vivado Design Suite Optimization

The XCKU040-3FFVA1156I is co-optimized with AMD’s Vivado Design Suite, supporting incremental compilation, UltraFast design methodology, and advanced placement and routing algorithms that reduce overall design closure time.

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Target Applications

The XCKU040-3FFVA1156I is specifically suited for applications that demand maximum clock performance within an industrial temperature envelope:

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Ordering Information

Part Number Variants — XCKU040 / FFVA1156 Package

Package Footprint Compatibility

The FFVA1156 package is footprint-compatible with Virtex UltraScale devices in the same package, enabling a smooth performance scale-up path without PCB redesign.

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Design Tools & Support Resources

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PCB Design Considerations for XCKU040-3FFVA1156I

Power Sequencing

The XCKU040-3FFVA1156I requires careful power rail sequencing. VCCINT must be ramped before VCCAUX and VCCO banks. Use a power sequencing controller or PMIC with programmable sequencing to comply with AMD’s recommended power-up sequence.

Decoupling Capacitors

Place bulk and high-frequency ceramic decoupling capacitors as close as possible to the VCCINT, VCCAUX, and VCCO BGA balls. AMD recommends a minimum of 10µF bulk per rail group plus 100nF and 10nF ceramic bypass per power ball.

Signal Integrity

At 850 MHz and 16 Gb/s transceiver rates, controlled-impedance routing is mandatory. Match trace lengths for differential pairs, maintain 100Ω differential impedance for LVDS and transceiver signals, and use AC coupling capacitors on GTH transceiver channels as specified in UG575.

Thermal Management

The industrial temperature grade ensures functional operation to 100°C junction temperature (Tj), but thermal design should target Tj ≤ 85°C for long-term reliability. Use the Xilinx Power Estimator to calculate thermal dissipation, and apply an appropriate heat spreader or heat sink based on airflow and power budget.

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Frequently Asked Questions

Q: What is the difference between XCKU040-3FFVA1156I and XCKU040-3FFVA1156E? The only difference is the temperature grade. The “I” suffix denotes an industrial temperature range (–40°C to +100°C junction), while the “E” suffix is commercial grade (0°C to +85°C). Logic resources, speed grade, and package are identical.

Q: Is the XCKU040-3FFVA1156I pin-compatible with Virtex UltraScale in the same package? Yes. AMD designed the UltraScale family with footprint compatibility across Kintex and Virtex UltraScale devices sharing the same package code, enabling design scalability without a PCB re-spin.

Q: What is the maximum DDR4 memory bandwidth supported? The XCKU040-3FFVA1156I supports DDR4 at up to 2,400 Mb/s per pin using the HP I/O banks, enabling high-throughput external memory interfaces for buffering and data-path applications.

Q: Can the XCKU040-3FFVA1156I be used in defense applications? Yes. The industrial temperature range, combined with the UltraScale architecture’s proven reliability, makes this device appropriate for many defense and aerospace applications. For applications requiring military-grade screening or space qualification, consult AMD’s Military & Aerospace product lines.

Q: What programming interface does the XCKU040-3FFVA1156I use? The device supports JTAG boundary-scan programming for in-system configuration and SPI/BPI flash for configuration memory. The Vivado Hardware Manager provides full configuration, debug, and in-circuit measurement capabilities via the integrated JTAG port.

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Summary

The XCKU040-3FFVA1156I delivers the highest performance available in the XCKU040 series: 850 MHz clock rates, 530,250 logic cells, 1,920 DSP slices, 32 GTH transceivers at 16.375 Gb/s, and industrial temperature operation — all within a compact 35×35mm FCBGA-1156 package. Whether you are building 100G line cards, radar processors, or high-speed data acquisition systems, this device offers the headroom and reliability required for mission-critical designs.

For volume pricing, engineering samples, and production availability, contact your authorized AMD Xilinx distributor or visit AMD’s official product page.