The LT ®1389 is a nanopower, precision shunt voltage reference. The bandgap reference uses trimmed preci- sion thin-film resistors and improved curvature correction techniques to achieve 0.05% initial voltage accuracy with guaranteed 10ppm/°C maximum temperature drift.
The LT1389 is a nanopower, precision shunt voltage reference that uses trimmed thin‑film resistors and curvature correction to achieve 0.05 % initial voltage accuracy and a guaranteed 10 ppm/°C temperature drift. It operates with an ultralow 800 nA current and does not require an output compensation capacitor, though it is stable with capacitive loads.
The device is offered in 1.25 V, 2.5 V, 4.096 V and 5 V SOT‑8 packages and is suitable for portable meters, precision regulators, A/D and D/A converters, and calibrators. Detailed electrical characteristics, typical performance curves, and package dimensions are provided in the following sections.
| Initial Voltage Accuracy | 0.05 % |
|---|---|
| Operating Current | 800 nA |
| Temperature Drift | 10 ppm/°C (max) |
The LT1389 provides an initial voltage accuracy of 0.05 %.
The device operates with a low current of 800 nA.
The maximum temperature drift is 10 ppm/°C.
The LT1389 is offered in 1.25 V, 2.5 V, 4.096 V and 5 V SOT‑8 packages.