The ADR121/ADR125/ADR127 is a family of micropower, high precision, series mode, band gap references with sink and source capability. The parts feature high accuracy, low current consumption and low dropout.
The ADR127 is a micropower, high‑precision LDO voltage reference offered by Analog Devices. It provides a stable 1.25 V output with low dropout (1.45 V) and ultra‑low quiescent current, making it suitable for battery‑powered instrumentation, portable medical equipment and automotive data‑acquisition systems.
The document includes detailed electrical characteristics, absolute maximum ratings, thermal resistance data, typical performance graphs, pin configuration and application guidance for designers.
| Typical output voltage (A‑grade) | 1.25 V |
|---|---|
| Temperature coefficient (A‑grade) | 25 ppm/°C |
| Dropout voltage (no load) | 1.45 V |
| Quiescent current (typical) | 85 pA |
| Operating temperature range | –40 °C to +125 °C |
The ADR127 provides a typical output voltage of 1.25 V (A‑grade).
The device needs a dropout of about 1.45 V above the nominal output when no load is present.
The ADR127 has an ultra‑low quiescent current of approximately 85 pA.
It operates from –40 °C up to +125 °C.