5V precision anchor for industrial and mixed-signal chains
The low-frequency noise is specified at 3µVp-p from 0.1Hz to 10Hz, making this part a candidate for the reference input of a 24-bit SAR or delta-sigma ADC where noise and drift directly limit system resolution. The series topology sinks only 1.2mA supply current while sourcing up to 10mA to the load — enough to drive an ADC reference input and a precision buffer simultaneously.
What the accuracy specs mean for a 24-bit ADC front end
A 24-bit ADC with a 5V reference has an LSB of roughly 298 nV. The 3µVp-p low-frequency noise from the REF5050IDGKR contributes about 10 LSBs of peak-to-peak noise at the reference pin — not negligible, but acceptable for many 24-bit designs if the ADC's own noise dominates. The 3ppm/°C drift translates to 15 µV per 100°C change at the output, which a system calibration routine can correct if the temperature is monitored. The ±0.05% initial accuracy (2.5 mV absolute error) is tighter than most ADC internal references, so the external reference sets the absolute scale.