Reference accuracy and drift budget
The MAX6023EBT25 is a 2.5V series voltage reference with ±0.2% initial output tolerance and a 30ppm/°C temperature coefficient. The series topology means the reference draws its 35µA quiescent current regardless of load, and the output is capable of sourcing or sinking up to 500 µA. This makes it suitable for precision ADC references and low-power sensor biasing where the load current is steady and well below the 500 µA ceiling.
Noise floor for signal-chain design
The low-frequency flicker noise dominates the DC accuracy in a precision measurement system — a 16-bit ADC with a 2.5V reference has a 38 µV LSB, so the 60 µVp-p noise in the sub-10 Hz band spans roughly 1.6 LSBs peak-to-peak, which sets the noise floor for the conversion.
Supply headroom and package reality
Input voltage range is 2.7V to 12.6V, giving a dropout of 200 mV minimum at the 2.5V output. The supplier device package is 5-UCSP (1x1.52), which is the Maxim nomenclature for the 5-ball wafer-level chip-scale package. Board layout must account for the exposed silicon backside — no thermal pad exists, and the package relies on the PCB copper for heat spreading.