NFL Star Dwight Freeney -- My Financial Advisor Robbed Me Blind ... N

NFL star Dwight Freeney is furious that the woman who swindled millions of dollars from him is getting away with a slap on the wrist, and he's begging a judge to send her ass to prison ... TMZ Sports has learned.

In court docs filed Monday in Cali ... the Chargers LB calls his ex-financial advisor Eva Weinberg's plea deal a "travesty of justice."

As we previously reported, Eva -- along with her lover and partner in crime, Michael Stern -- jacked at least $2.2 mil from Freeney back in 2010, when they were handling his finances.

Stern pled guilty ... and got 5 years in federal lockup. He also had to return $2.5 million in stolen loot.

Eva also pled guilty to a lesser charge in exchange for a lighter sentence ... 36-months probation with 8 months being served under house arrest.

But in the docs, Freeney claims Weinberg "lied repeatedly to the [prosecutor] and FBI" about her involvement in the scheme -- laying most of the blame on Stern -- just to score an unfairly sweet deal.

Weinberg's sentencing hearing is going down today ... and the judge is expected to approve the plea agreement, or take Dwight's advice.