REF43 is a low power precision reference providing a stable 2.5 V output independent of variations in supply voltage, load conditions or ambient temperature. It is suitable as a reference level for 8-, 10- and 12-bit data acquisition systems, or wherever a stable, known voltage is required.
The REF43 provides a stable 2.5 V output independent of supply voltage, load current, and ambient temperature. It is intended for data‑conversion systems, log amplifiers, 4‑20 mA transmitters, and power‑supply regulators where low power dissipation is required.
The device is available in several package types (8‑pin CERDIP, plastic DIP, SOIC) and includes a temperature‑output pin for system temperature monitoring. Typical application circuits, decoupling recommendations, and boost‑transistor options are illustrated in the document.
| Output Voltage (no load) | 2.5 V |
|---|---|
| Load Regulation | 20 ppm/mA max |
| Temperature Coefficient | 25 ppm/°C max |
| Operating Voltage Range | +4.5 V to +40 V |
| Extended Industrial Temperature Range | -40 °C to +85 °C |
The REF43 provides a nominal 2.5 V output.
It can operate from a supply voltage of +4.5 V up to +40 V.
The device is rated for –40 °C to +85 °C operating temperature.