Robinson spent the past three seasons with Washington, starting a career-high seven games and recording one interception in 2015. His season was cut short after a hamstring injury landed him on injured reserve and he was later released.
Robinson's career totals include 38 games played, 88 tackles, two interceptions and four passes defensed.
The former Michigan State Spartan was originally a sixth-round draft choice of the San Francisco 49ers in 2012.