BRUSSELS (Reuters) - Chip design software company Synopsys has offered remedies to address EU antitrust concerns about its $35 billion cash-and-stock acquisition of engineering software maker Ansys, according to a European Commission filing on Tuesday.

The deal, announced in January, is the biggest in the technology sector since chipmaker Broadcom's $69 billion buy of software maker VMware last November.

(Reporting by Foo Yun Chee, Editing by Louise Heavens)