  Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei, GRIFFIN,
is a new experimental facility for radioactive decay studies at the TRIUMF-ISAC
laboratory. This article describes the details of the custom designed GRIFFIN
digital data acquisition system. The features of the system that will enable
high-precision half-life and branching ratio measurements with levels of
uncertainty better than 0.05% are described. The system has demonstrated the
ability to effectively collect signals from High-purity germanium crystals at
counting rates up to 50kHz while maintaining good energy resolution, detection
efficiency and spectral quality.
