Analog Devices (ADI) is suing Xilinx for patent infringement, claiming at least two of Xilinx’s Zync UltraScale+ RFSoC products use ADI’s patented converter technology. The lawsuit requests the court stop Xilinx from selling products that infringe on ADI’s patents, as well as grant ADI financial damages.

In the complaint, ADI says it “has worked closely with Xilinx for many years to develop proven solutions tailored to Xilinx’s field-programmable gate array (FPGA) products,” sharing proprietary information. ADI claims

“At the same time that Xilinx purportedly was working with ADI as an alleged partner to combine ADI’s proprietary ADC technology with Xilinx’s programmable system-on-a-chip (“SoC”) products, however, Xilinx was also separately working to incorporate ADI’s patented technology directly into its new “Integrated Direct-RF Subsystem.”

ADI claims Xilinx infringed eight of its U.S. patents in developing its integrated direct RF subsystem:

• No. 7,719,452, “Pipelined Converter Systems With Enhanced Linearity.”
• No. 7,663,518, “Dither Technique For Improving Dynamic Non-linearity In An Analog To Digital Converter and an Analog To Digital Converter Having Improved Dynamic Non-Linearity.””
• No. 6,900,750, “Signal Conditioning System With Adjustable Gain And Offset Mismatches.”
• No. 10,250,250, “Bootstrapped Switching Circuit.”
• No. 7,274,321, “Analog to Digital Converter.”
• No. 7,012,463, “Switched Capacitor Circuit with Reduced Common-Mode Variations.”
• No. 8,487,659, “Comparator with Adaptive Timing.”
• No. 7,286,075, “Analog to Digital Converter with Dither.”

ADI’s complaint, filed in the United States District Court for the District of Delaware, can be downloaded here.

“We are committed to defending and protecting our intellectual property, which creates long-term value for all our stakeholders.” — Larry Weiss, General Counsel of Analog Devices