XCKU035-1FFVA1156I is an AMD (formerly Xilinx) Kintex® UltraScale™ Field Programmable Gate Array (FPGA) engineered for demanding mid-range applications that require high signal processing bandwidth, low power consumption, and cost-effective scalability. Built on a proven 20nm process node, the XCKU035-1FFVA1156I delivers an exceptional balance of logic density, memory, and I/O capability — making it a premier choice for engineers designing next-generation communications, data center, and embedded systems.

Whether you are prototyping a 100G networking card, accelerating DSP algorithms, or building medical imaging hardware, the XCKU035-1FFVA1156I provides the performance headroom and design flexibility your project demands.

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What Is the XCKU035-1FFVA1156I?

The XCKU035-1FFVA1156I belongs to AMD’s Xilinx FPGA Kintex UltraScale family — a series designed to maximize price-per-performance at the 20nm technology node. The “1” in the part number denotes Speed Grade –1 (standard), “FFVA1156” identifies the 1156-pin Fine-Pitch Ball Grid Array (FCBGA) package, and the trailing “I” specifies the Industrial temperature grade, rated from –40°C to +100°C (TJ).

This device targets engineers who need more logic and bandwidth than entry-level FPGAs can provide, without stepping up to the cost and complexity of Virtex-class devices.

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XCKU035-1FFVA1156I Key Specifications at a Glance

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XCKU035-1FFVA1156I Detailed Logic Resources

Understanding the on-chip logic resources helps designers evaluate whether this FPGA meets their specific application requirements. The table below summarizes the core fabric elements of the XCKU035-1FFVA1156I:

Note: Specific resource counts for the KU035 device are drawn from AMD’s Kintex UltraScale product tables and datasheets. Always verify against the latest AMD documentation (DS892) for your design.

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Package & Pinout: 1156-FCBGA (FFVA1156)

The XCKU035-1FFVA1156I is housed in a 1156-pin Fine-Pitch Ball Grid Array (FCBGA) package measuring 35mm × 35mm. This package format is common across the Kintex UltraScale family, enabling pin-compatible migration between density variants (e.g., XCKU025, XCKU035, XCKU060) without full PCB re-spins.

Pin Compatibility Within KU035 Variants

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Industrial Temperature Grade Explained

The suffix “I” in XCKU035-1FFVA1156I indicates an Industrial temperature rating, specifying a junction temperature range of –40°C to +100°C (TJ). This is critical for applications deployed in environments subject to extreme thermal variation, such as:

• Outdoor telecommunications infrastructure
• Automotive and transportation systems
• Military and aerospace (consult AMD for exact compliance levels)
• Industrial automation and control systems
• Data center edge deployments

If your application operates in a standard lab or office environment (0°C to +85°C), the commercial-grade XCKU035-1FFVA1156C may be sufficient and is typically lower in cost. However, for guaranteed long-term reliability under thermal stress, the industrial-grade “I” variant is the correct choice.

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Kintex UltraScale Architecture: Why It Matters

20nm Process Node Advantages

The Kintex UltraScale family is fabricated on TSMC’s 20nm planar process, which delivers meaningful benefits compared to earlier 28nm and 45nm devices:

• Significantly higher logic density per mm² of silicon
• Reduced dynamic power at equivalent performance levels
• Greater on-chip memory capacity without proportional die area cost
• Ability to integrate more system functionality onto a single chip, reducing BOM cost

UltraScale Architecture Highlights

The UltraScale architecture introduces several advances over the earlier 7-series devices:

• AMBA AXI4 native interfaces for efficient IP integration
• Enhanced clocking with improved MMCM and PLL resources
• Improved routing resources for easier timing closure at high speeds
• Block RAM with ECC support for error-tolerant applications
• DSP48E2 slices with improved cascading and pre-adder capabilities
• GTH transceivers supporting up to 16.3 Gb/s per channel

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High-Speed Serial Transceivers: GTH Interface

One of the standout features of the XCKU035-1FFVA1156I is its GTH (Gigabit Transceiver High-performance) capability. These transceivers support a wide range of serial protocols and line rates, enabling designers to implement industry-standard interfaces without external SerDes chips.

This transceiver capability makes the XCKU035-1FFVA1156I a strong candidate for 100G networking line cards, wireless basestation fronthaul (CPRI), and high-speed instrument interfaces.

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Target Applications for XCKU035-1FFVA1156I

The XCKU035-1FFVA1156I is purpose-built for mid-range applications that push the limits of simpler FPGAs but do not require the extreme density of flagship Virtex devices. Common use cases include:

Data Center & Networking

• 100G/400G packet processing and forwarding
• SmartNIC acceleration cards
• Network function virtualization (NFV) hardware offload
• High-frequency trading (HFT) acceleration

Wireless Infrastructure

• 5G baseband processing
• CPRI/eCPRI fronthaul interfaces
• Heterogeneous wireless infrastructure (small cells, macro base stations)
• Software-defined radio (SDR) platforms

Video & Imaging

• 8K/4K video processing and transcoding
• Medical imaging reconstruction (CT, MRI, ultrasound)
• Machine vision systems
• Broadcast infrastructure

Aerospace & Defense

• Radar signal processing
• Secure communications (meets industrial temp requirements)
• Electronic warfare (EW) systems
• Space-qualified design starting points

Embedded Computing

• High-performance embedded control systems
• Custom compute acceleration
• Protocol bridging and conversion

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Power Supply Requirements

Proper power sequencing is critical for reliable FPGA operation. The XCKU035-1FFVA1156I requires multiple supply rails as typical for UltraScale devices:

Always consult AMD’s UltraScale Power Advantage Tool (XPA) and the device datasheet (DS892) for accurate power estimation for your specific configuration and utilization.

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Development Tools & Software Support

The XCKU035-1FFVA1156I is fully supported by AMD Vivado Design Suite, which provides:

• HDL synthesis (VHDL, Verilog, SystemVerilog)
• Place-and-route optimized for UltraScale architecture
• Timing analysis and power estimation
• IP Integrator for block design creation
• High-Level Synthesis (HLS) via Vitis HLS
• Partial reconfiguration support
• Hardware debugging with Integrated Logic Analyzer (ILA)

The device is also supported by AMD Vitis Unified Software Platform for accelerated applications, enabling C/C++ and OpenCL-based FPGA programming for data center workloads.

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Ordering & Availability

The XCKU035-1FFVA1156I is available from authorized AMD distributors including DigiKey, Mouser, Arrow Electronics, and Avnet. Due to high market demand for UltraScale devices, lead times may vary — it is recommended to confirm availability and pricing directly with your preferred distributor.

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XCKU035-1FFVA1156I vs. Comparable Kintex UltraScale Variants

The XCKU035-1FFVA1156I hits a particularly useful sweet spot: it offers considerably more logic than the XCKU025 while sharing the same 1156-FCBGA footprint, allowing designers to future-proof PCB layouts for density upgrades.

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Frequently Asked Questions (FAQ)

What is the difference between XCKU035-1FFVA1156I and XCKU035-1FFVA1156C?

The only difference is the temperature grade. The “I” variant (XCKU035-1FFVA1156I) is rated for industrial use (–40°C to +100°C TJ), while the “C” variant (XCKU035-1FFVA1156C) is rated for commercial use (0°C to +85°C TJ). Logic resources, package, and speed grade are identical.

What speed grade is the XCKU035-1FFVA1156I?

This device carries Speed Grade –1, which is the standard performance tier for the KU035. Higher speed grade variants (–2, –3) are available for timing-critical designs requiring faster internal logic and I/O switching.

Is the XCKU035-1FFVA1156I RoHS compliant?

Yes. The XCKU035-1FFVA1156I is RoHS3 Compliant, meeting EU Directive 2015/863/EU (RoHS 3) restrictions on hazardous substances.

What programming tool is used with the XCKU035-1FFVA1156I?

The device is programmed and developed using AMD Vivado Design Suite (version 2016.1 or later). JTAG programming via Xilinx Platform Cable USB II or equivalent is supported, as well as SPI and BPI flash configuration.

What is the core voltage (VCCINT) for this FPGA?

The VCCINT supply range for the XCKU035-1FFVA1156I is 0.922V to 0.979V, with a nominal operating point of 0.95V.

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Summary

The XCKU035-1FFVA1156I is a proven, actively manufactured AMD Kintex UltraScale FPGA that delivers 444,343 logic cells, 520 user I/Os, 19.456 Mb of on-chip RAM, and high-speed GTH transceivers — all in a compact 35mm × 35mm 1156-FCBGA package with industrial temperature coverage. Its 20nm UltraScale architecture provides a well-balanced platform for next-generation networking, wireless, video, and embedded applications where performance-per-watt and design flexibility are equally important.

For engineers evaluating mid-range FPGAs for industrial-grade designs, the XCKU035-1FFVA1156I represents one of the most capable and cost-effective options in the Kintex UltraScale portfolio.