John Madden, the Hall of Fame coach turned broadcaster whose exuberant calls combined with simple explanations provided a weekly soundtrack to NFL games for three decades, died Tuesday morning, the league said. He was 85. The NFL said he died unexpectedly and did not detail a cause. Madden gained fame in a decade-long stint as the coach of the renegade Oakland Raiders, making it to seven AFC title games and winning the Super Bowl following the 1976 season. He compiled a 103-32-7 regular-season record, and his .759 winning percentage is the best among NFL coaches with more than 100 games. But it was his work after prematurely retiring as coach at age 42 that made Madden truly a household name. He educated a football nation with his use of the telestrator on broadcasts; entertained millions with his interjections of “Boom!” and “Doink!” throughout games; was an omnipresent pitchman selling restaurants, …