The ADR390/ADR391/ADR392/ADR395 series of precision voltage references feature low power and low noise with shutdown, making them ideal for battery-powered instrumentation, portable medical instrumentation, data acquisition systems, industrial process controls, and automotive applications.
The ADR39x family (ADR390, ADR391, ADR392, ADR395) are micropower, low‑dropout voltage references offering stable 2.048 V, 2.5 V, 4.096 V, and 5 V outputs in a compact 5‑lead TSOT package. They deliver ultralow output noise, high accuracy, and require no external capacitor, making them ideal for battery‑powered instrumentation.
Typical applications include battery‑powered instrumentation, portable medical devices, data‑acquisition systems, industrial process controls, and automotive electronics. The device operates from a supply voltage as low as 300 mV above the output and draws only a few picoamps in shutdown mode.
| Initial accuracy (A‑grade) | ±6 mV |
|---|---|
| Temperature coefficient (A‑grade) | 25 ppm/°C |
| Supply‑voltage headroom | 300 mV above output |
| Quiescent current (no load) | 120 µA |
| Voltage noise (0.1 Hz‑10 Hz) | 5 µV p‑p |
| Ripple rejection ratio (60 Hz) | ‑80 dB |
| Shutdown supply current | 3 µA |
A minimum of 300 mV above the output voltage is required.
The device draws 120 µA of quiescent current with no load.
The voltage noise is 5 µV peak‑to‑peak from 0.1 Hz to 10 Hz.
The shutdown supply current is 3 µA.