The XCKU115-2FLVB2104I is a high-performance Field Programmable Gate Array (FPGA) from AMD Xilinx, part of the industry-leading Kintex® UltraScale™ family. Built on a 20nm process node, this device is engineered for demanding applications that require exceptional signal processing bandwidth, high logic density, and advanced transceiver capabilities — all within a cost-optimized mid-range platform.

If you are looking for a powerful and versatile Xilinx FPGA, the XCKU115-2FLVB2104I delivers an outstanding balance of performance, capacity, and power efficiency that makes it one of the top choices for industrial, communications, and data processing designs.

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What Is the XCKU115-2FLVB2104I?

The XCKU115-2FLVB2104I belongs to the Kintex UltraScale series — AMD Xilinx’s flagship mid-range FPGA family. The part number breaks down as follows:

This device is manufactured by AMD (formerly Xilinx) and is categorized under Embedded – FPGAs (Field Programmable Gate Arrays) in standard electronic component classifications.

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XCKU115-2FLVB2104I Key Specifications

Core Device Parameters

Memory and DSP Resources

I/O and Connectivity

Electrical and Thermal

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Package and Ordering Information

Package Details

Part Number Variants for XCKU115

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XCKU115-2FLVB2104I Architecture Overview

## UltraScale Architecture Highlights

The XCKU115-2FLVB2104I is built on Xilinx’s UltraScale™ ASIC-like architecture, which introduces several advancements over previous-generation 7-Series devices:

• Next-generation routing architecture reduces congestion and improves timing closure.
• Stacked Silicon Interconnect (SSI) Technology enables the largest devices by combining multiple silicon dies on a single substrate.
• UltraScale CLBs feature optimized LUT and flip-flop ratios for higher utilization efficiency.
• Advanced clock management with Mixed-Mode Clock Managers (MMCMs) and Phase-Locked Loops (PLLs).

### DSP Processing Performance

The XCKU115-2FLVB2104I includes 5,520 DSP48E2 slices, making it exceptionally well-suited for signal processing workloads. Each DSP48E2 slice supports:

• Pre-adder + multiplier + post-adder cascade pipeline
• 27×18-bit signed multiplication
• Accumulation, pattern detection, and SIMD arithmetic

This makes the XCKU115-2FLVB2104I one of the highest DSP-density mid-range FPGAs available, ideal for radar, software-defined radio (SDR), image processing, and machine learning inference acceleration.

### High-Speed Serial Connectivity

With 32 GTH transceivers capable of line rates up to 16.3 Gb/s, the XCKU115-2FLVB2104I supports a wide range of high-speed serial protocols:

### Memory Interface Capabilities

The device’s high-performance (HP) I/O banks support industry-standard memory interfaces including:

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Speed Grade –2: Performance Profile

The –2 speed grade of the XCKU115 sits in the mid-to-high performance tier of the Kintex UltraScale family. Xilinx offers speed grades –1, –2, and –3, where –3 is the fastest. The –2 grade provides:

• Excellent timing margins for most high-performance designs
• Lower static power than the –3 grade
• Industrial temperature operation (suffix “I”), meaning it is validated for operation in environments from –40°C to +100°C

This combination makes the XCKU115-2FLVB2104I a strong choice for production-grade industrial and telecommunications equipment.

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Typical Applications for XCKU115-2FLVB2104I

The XCKU115-2FLVB2104I is a highly capable device deployed across multiple demanding application domains:

#### Wireless Communications and 5G Infrastructure

The combination of GTH transceivers, hard 100GE blocks, and massive DSP resources makes this device a natural fit for 5G radio access network (RAN) baseband processing, fronthaul, and backhaul equipment.

#### Data Center and Network Acceleration

With PCIe Gen3 support and 100G Ethernet hard IP, the XCKU115-2FLVB2104I is used in SmartNICs, FPGA-accelerated servers, and network packet processing cards.

#### Defense and Aerospace Signal Processing

The industrial temperature grade and high reliability of Xilinx UltraScale devices make the XCKU115-2FLVB2104I well-suited for radar, electronic warfare, and satellite communication signal processing.

#### High-Performance Computing (HPC)

With over 5,500 DSP slices and large block RAM resources, this FPGA accelerates compute-intensive algorithms in HPC environments including financial analytics, genomics, and AI/ML inference.

#### Test and Measurement Equipment

High I/O count (702 user IOs), flexible I/O standards, and precision clock management support advanced test and measurement instruments requiring real-time data acquisition and signal generation.

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Design Tools and Support

Vivado Design Suite

The XCKU115-2FLVB2104I is fully supported by AMD Xilinx’s Vivado Design Suite, which provides:

• Synthesis and implementation for UltraScale devices
• Timing analysis and power estimation tools
• IP Integrator for block-based design
• Xilinx Power Estimator (XPE) for accurate power budgeting

IP Cores and Reference Designs

Xilinx offers a comprehensive library of validated IP cores for the XCKU115, including:

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Why Choose the XCKU115-2FLVB2104I?

Advantages Over Competing Devices

Summary: Key Reasons to Select This FPGA

1. Highest density in the Kintex UltraScale family — the KU115 is the largest device in the series.
2. Industrial temperature rating — suitable for harsh environments without uprating.
3. Rich hard IP — PCIe Gen3, 100G Ethernet, and Interlaken hard blocks reduce resource usage and improve performance.
4. Proven ecosystem — extensive Vivado tool support, IP libraries, and community resources.
5. Cost-efficient mid-range segment — better price-to-performance ratio compared to Virtex UltraScale devices.

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Compliance and Certifications

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Frequently Asked Questions (FAQ)

Q: What is the difference between XCKU115-2FLVB2104I and XCKU115-2FLVB2104E? The only difference is the temperature grade. The “I” suffix indicates Industrial grade (–40°C to +100°C), while the “E” suffix indicates Extended commercial grade (0°C to +100°C).

Q: Is the XCKU115-2FLVB2104I RoHS compliant? Yes, this device is fully RoHS compliant.

Q: What design software is required for the XCKU115-2FLVB2104I? AMD Xilinx Vivado Design Suite is required. The XCKU115 is not supported in the older ISE Design Suite.

Q: What are the supported memory standards? The XCKU115-2FLVB2104I supports DDR4, DDR3, LPDDR4, and QDR-II+ through its high-performance (HP) I/O banks.

Q: What is the core supply voltage? The VCCINT (core voltage) is 0.95V for the –2 speed grade device.

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Conclusion

The XCKU115-2FLVB2104I is one of the most capable mid-range FPGAs on the market today. Its combination of 1.16 million logic cells, 5,520 DSP slices, 32 high-speed GTH transceivers, and hard IP blocks for PCIe Gen3 and 100G Ethernet makes it an exceptional platform for communications, data center, defense, and industrial applications. The industrial temperature grade ensures reliable operation in demanding environments, while AMD Xilinx’s Vivado toolchain and rich IP ecosystem provide a fast path from design to production.

Whether you are developing next-generation wireless infrastructure, FPGA-based compute accelerators, or mission-critical embedded systems, the XCKU115-2FLVB2104I delivers the resources and reliability needed to meet your design goals.