Semtech, a supplier of analog and mixed-signal semiconductors, has appointed Charles Ammann as general counsel and corporate secretary.  He succeeds Randall Holliday, who has announced his retirement.

Ammann comes to Semtech with more than 30 years of corporate and legal experience, most recently as general counsel and secretary of United Online.  Before joining United Online, he held senior executive positions and served as the general counsel at TV Guide; United Video Satellite Group; and Flint Industries. Ammann also served as a partner for the law firm Gable & Gotwals.