ADR121/ADR125/ADR127 are a family of micropower, high precision, series mode, band gap references with sink and source capability. The parts feature high accuracy, low dropout, high output current and low typical operating current, and are suitable for battery-powered instrumentation, portable medical equipment, data acquisition systems and automotive applications.
The document describes a family of micropower, high-precision, series mode band gap references (ADR121/ADR125/ADR127) available in a tiny TSOT package. These devices feature patented temperature-drift curvature correction to minimize output voltage nonlinearity and offer low dropout performance suitable for battery-powered applications.
| Maximum Temperature Coefficient | 25 ppm/°C (A Grade) |
|---|---|
| Low Dropout Voltage (ADR121/ADR125) | 300 mV |
| High Output Current | +5 mA / −2 mA |
| Typical Operating Current | 85 μA |
| Operating Temperature Range | −40°C to +125°C |
The dropout voltage for ADR127 requires 1.45 V above the nominal output voltage.
The typical quiescent current is 125 μA when the input voltage is 18 V.
The ADR12x family is housed in the tiny TSOT (UJ-6) package.