The XCKU085-3FLVB1760E is a high-performance field-programmable gate array (FPGA) from the AMD Xilinx Kintex® UltraScale™ family. Manufactured on a 20nm process node, this device delivers exceptional signal processing bandwidth, next-generation GTH transceivers, and an industry-leading balance of logic density, DSP performance, and I/O flexibility — all at a mid-range price point. Whether you are designing for wireless communications, data center acceleration, video processing, or advanced radar systems, the XCKU085-3FLVB1760E offers the performance and resources to meet demanding application requirements.

For engineers seeking a broad selection of programmable logic solutions, Xilinx FPGA devices represent one of the most versatile product lines available in the market today.

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What Is the XCKU085-3FLVB1760E?

The XCKU085-3FLVB1760E belongs to the Kintex UltraScale product family, AMD Xilinx’s mid-range FPGA tier built on the UltraScale architecture — the industry’s first ASIC-class programmable architecture. The part number can be decoded as follows:

The -3 speed grade is the fastest available in the Kintex UltraScale lineup, making this variant especially suited for timing-critical, high-throughput designs.

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XCKU085-3FLVB1760E Key Specifications

Core Device Parameters

I/O and Transceiver Resources

Memory and Signal Processing

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XCKU085-3FLVB1760E Package and Pinout Details

The XCKU085-3FLVB1760E uses the 1760-ball Flip-Chip BGA (FCBGA) package. The FL-series package designation indicates a low-voltage optimized BGA with 1.0mm ball pitch, enabling high pin density on system boards. This package is footprint-compatible with other Kintex UltraScale and UltraScale+ devices using the same “B1760” designation, greatly simplifying hardware migration and design reuse.

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Architecture Highlights: Kintex UltraScale Technology

UltraScale ASIC-Class Programmable Architecture

The XCKU085-3FLVB1760E is built on the UltraScale architecture, the first FPGA architecture designed using ASIC design methodologies. Key architectural advantages include:

• Next-Generation Routing: A highly segmented, hierarchical routing network that reduces congestion and improves timing closure, enabling higher design utilization compared to prior generations.
• Improved CLB Structure: Each Configurable Logic Block (CLB) contains eight 6-input LUTs and sixteen flip-flops, improving logic density and efficiency over the 7-Series architecture.
• DSP48E2 Slices: Upgraded DSP slices featuring pre-adder, multiplier, and post-adder/accumulator in a single tile — ideal for FIR filters, FFTs, and machine learning inference workloads.

GTH Transceivers for High-Speed Serial Connectivity

The XCKU085-3FLVB1760E integrates GTH transceivers supporting data rates up to 16.3 Gb/s per channel. These fully-integrated transceivers enable a wide range of high-speed protocols, including:

• PCIe Gen3 ×8 (Hard IP)
• 100G Ethernet (100GBASE-R, Hard MAC/PCS)
• 150G Interlaken (Hard IP)
• SRIO, CPRI, JESD204B
• Custom serial protocols

Hard IP Blocks

One of the primary advantages of the XCKU085 over soft-IP alternatives is the inclusion of hardened IP:

These hardened blocks free up programmable fabric for application logic, reducing design complexity and improving power efficiency.

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Applications and Use Cases

The XCKU085-3FLVB1760E is designed for bandwidth-intensive and compute-heavy applications across multiple industries:

Wireless Communications & 4G/5G Infrastructure

With massive DSP resources (2,760 slices), high-speed GTH transceivers, and CPRI/JESD204B support, this FPGA is ideally suited for radio access network (RAN) equipment, digital front-end (DFE) processing, and massive MIMO antenna systems.

Data Center Acceleration

The combination of PCIe Gen3 ×8 Hard IP and 100G Ethernet MAC makes the XCKU085-3FLVB1760E a natural fit for FPGA-based network function virtualization (NFV), packet processing, and inference acceleration in cloud and edge data centers.

Defense, Radar & Electronic Warfare

High logic capacity, wide I/O bandwidth, and availability in extended temperature grades make this device well-suited for radar signal processing, electronic intelligence (ELINT), software-defined radio (SDR), and avionics systems.

Video & Image Processing

With large block RAM and distributed memory resources, the XCKU085-3FLVB1760E supports real-time 4K/8K video processing, image analysis pipelines, and broadcast encoding/decoding applications.

High-Performance Computing (HPC)

Dense DSP slice arrays and support for external DDR4 memory make this FPGA a powerful platform for scientific computing, financial modeling, and other HPC workloads requiring deterministic, low-latency processing.

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Development Tools and Design Flow

AMD Xilinx provides a comprehensive ecosystem for designing with the XCKU085-3FLVB1760E:

The Vivado Design Suite offers full support for the XCKU085 device family, including timing constraints, place-and-route optimization, and DFT (Design for Test) flows. The device is compatible with industry-standard simulation tools (ModelSim, XSIM, Cadence, Synopsys).

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Ordering Information and Product Compliance

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XCKU085-3FLVB1760E vs. Other KU085 Variants

The KU085 die is available in multiple speed grades and packages. The table below summarizes key variants:

The -3 speed grade (XCKU085-3FLVB1760E) is specifically intended for designs where maximum clock frequency and minimum propagation delay are critical. It is the top performance tier within the KU085 device family.

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Frequently Asked Questions (FAQ)

Q: What is the maximum operating frequency of the XCKU085-3FLVB1760E?
A: The -3 speed grade provides the highest performance in the Kintex UltraScale family. Achievable system clock frequencies depend on design complexity, but logic paths in the range of 700–800+ MHz are achievable in well-constrained designs.

Q: Is the XCKU085-3FLVB1760E footprint compatible with other UltraScale devices?
A: Yes. The B1760 package footprint is shared across multiple UltraScale and UltraScale+ devices, enabling hardware-level migration without PCB redesign.

Q: What external memory interfaces does this FPGA support?
A: The XCKU085-3FLVB1760E supports DDR4, DDR3/L, LPDDR4, QDR II+, RLDRAM 3, and Hybrid Memory Cube (HMC) interfaces via the UltraScale Memory IP.

Q: Does this device support partial reconfiguration?
A: Yes. Partial reconfiguration is supported, allowing portions of the FPGA fabric to be reprogrammed at runtime while the rest of the device continues to operate.

Q: Is the XCKU085-3FLVB1760E suitable for safety-critical applications?
A: For DO-254, IEC 61508, or ISO 26262 applications, refer to AMD Xilinx’s functional safety documentation and design methodology guides. Industrial-grade (I) variants are recommended for extended temperature requirements beyond the extended commercial range.

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Summary

The XCKU085-3FLVB1760E is one of the most capable mid-range FPGAs available, combining over one million logic cells, 2,760 DSP slices, 34+ Mb of block RAM, and 16.3 Gb/s GTH transceivers in the high-performance -3 speed grade. Its hardened PCIe Gen3, 100G Ethernet, and 150G Interlaken blocks make it ideal for demanding applications in wireless infrastructure, data center acceleration, defense electronics, and video processing. With full Vivado Design Suite support and footprint compatibility across the UltraScale family, the XCKU085-3FLVB1760E offers engineers a powerful and flexible platform for next-generation system designs.