Williams was sentenced Wednesday in Denver but a judge said he didn't have to start serving it until Feb. 7, 2013.
Prosecutors had asked that Williams serve 30 days in jail.
Besides the home arrest, Williams will have to be on probation for two years, have his sobriety monitored and attend alcohol education classes and therapy. He also must perform 56 hours of community service and pay $2,390 in court costs.
Williams is serving a nine-game suspension, partly because of his August conviction for driving while ability impaired.
The team's leading tackler in four of the last five seasons won't return to the Broncos until Nov. 12.
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