2.5 V shunt reference in a SOT-23-3 — what it buys you
It operates as a two-terminal shunt — no external series pass element — making it a drop-in for biasing ADC references, DAC voltage rails, or regulator feedback dividers in tight board spaces.
80 µA cathode current — the power budget trade-off
Cathode current is 80 µA typical, with a maximum output current of 15 mA. The low quiescent floor means the reference can run from a high-impedance bias resistor without wasting rail current, but the 15 mA ceiling limits how many loads it can drive directly — plan a buffer for multiple ADC inputs or a long trace.
35 µVrms noise — clean enough for 12-bit systems
That's clean enough for a 12-bit ADC with a 2.5 V reference (1 LSB ~610 µV) without an external filter cap, though a 0.1 µF bypass at the output never hurts.