Collins was arrested in October after a car accident involving an 89-year-old motorist. The former "The New Hollywood Squares" host entered rehab shortly after the incident.
Other terms of Collins' sentence include four years of probation, a $500 fine and 100 hours of community service, TMZ.com reported.
Collins also must pay restitution to the victims, enroll in an 18-month alcohol-education program and attend 26 Alcoholics Anonymous meetings.
TMZ.com cited sources who said the performer has already attended 18 meetings.
The judge told Collins he could serve his sentence at any city jail, but his stay would be at his own expense.