Requiring unanimity in jury verdicts is the rule in every state and in federal courts (Rule 31(a), Federal Rules of Criminal Procedure).I understand a few states allow less than unanimous jury verdicts in criminal cases.
But... you are probably correct about Federal Criminal Trials.
Can Defendants Waive Their Right to Unanimity?
Defendants in federal court cannot waive, or give up, their right to a unanimous verdict. But a few states will allow a defendant to waive this right, just as the defendant can waive other Constitutional rights, such as the Fifth Amendment right not to be compelled to testify. The majority of states, however, do not allow a defendant to agree to a less-than-unanimous verdict.