Fixed 4.5V reference with ±0.05% initial accuracy
The REF5045IDGKR: Low-frequency noise is specified at 3 µVp-p from 0.1 Hz to 10 Hz, making this part a clean voltage anchor for 16-bit and higher ADC reference inputs, DAC scaling, or precision regulator biasing.
Output drive and supply headroom
The series topology regulates the output from a 4.7 V to 18 V input rail, drawing 1.2 mA quiescent supply current while sourcing up to 10 mA to the load. That 10 mA output capability is enough to drive multiple ADC reference inputs or a small resistive divider chain without an external buffer — but the load regulation spec should be checked against the total current draw to keep the output within the ±0.05% window.
Package and footprint for production
The 8-VSSOP footprint is shared with other REF50xx family members, so a board layout can accommodate multiple output voltage options with a single copper pattern.