The REF03 precision voltage reference provides a stable 2.5 V output, with minimal change for variations in supply voltage, ambient temperature, or loading conditions. Single-supply operation over an input voltage range of 4.5 V to 33 V with a current drain of 1 mA and good temperature stability is achieved using an improved band gap design. Primarily targeted at price sensitive applications, the REF03 is available in plastic PDIPs and surface-mount small outline plastic pac
The REFO3 precision voltage reference delivers a 2.5 V output with tight tolerance (+0.6 % max) and excellent temperature stability (50 ppm/°C). It operates from a single supply voltage between 4.5 V and 33 V and draws up to 1.4 mA, making it suitable for price‑sensitive designs.
Typical applications include data‑conversion circuits, analog front‑ends, transmitters, and power supplies that require a stable reference from a single 5 V rail. The device can be paired with external boost transistors for higher output currents and with DACs for accurate voltage generation.
| Typical Output Voltage | 2.5 V |
|---|---|
| Output Voltage Tolerance | ±0.6 % |
| Input Voltage Range | 4.5 V to 33 V |
| Supply Current | 1.4 mA max |
| Temperature Coefficient | 50 ppm/°C |
| Line Regulation | 50 ppm/V |
| Load Regulation | 100 ppm/mA |
| Absolute Maximum Input Voltage | 40 V |
| Storage Temperature Range | ‑65 °C to +175 °C |
| Lead Temperature (Soldering, 10 s) | 300 °C |
The REFO3 provides a stable 2.5 V output.
It operates from 4.5 V up to 33 V.
The device draws up to 1.4 mA of supply current.