Precision 2.5V reference in a hand-solderable package
The LT6654BHS6-2.5#TRMPBF is a series voltage reference from Analog Devices that delivers a fixed 2.5 V output with a tight ±0.1% initial tolerance and a low 20 ppm/°C temperature coefficient — the kind of stability you need when a 0.1% shift in the reference rail throws your ADC reading off by several LSBs.
Noise and drift — what the numbers mean on your bench
The input voltage range spans 3 V to 36 V, so it can run off a 5 V rail or a 24 V industrial supply without an extra pre-regulator, and the 10 mA output current can drive multiple ADC reference inputs or a small resistive load. Quiescent supply current is 600 µA typical — not the lowest in the class, but reasonable for a precision reference that's always on.