Cirrus Logic Inc. is an American fabless semiconductor supplier that specializes in analog, mixed-signal, and audio DSP integrated circuits (ICs). Since 1998, the company's headquarters have been in Austin, Texas.

Wolfson Microelectronics plc was a microelectronics and fabless semiconductor company headquartered in Edinburgh, Scotland. It specialised in signal processing and mixed-signal chips for the consumer electronics market and had engineering and sales offices throughout Asia-Pacific, Europe, and the United States. In 2014, it was acquired by Cirrus Logic for £291 million.