The ADR293 is a low noise, micropower precision voltage reference that operates in a supply range of 6.0 V to 15 V. Its features include a maximum supply current of 15 μA, low noise of 15 μV p-p (0.1 Hz to 10 Hz), high output current of 5 mA, and a temperature range of -40°C to +125°C. The product is suitable for portable instrumentation, precision reference for 5 V systems, ADC and DAC references, solar-powered applications, and loop-current powered instruments.
The ADR293 is a low noise, micropower precision voltage reference utilizing an XFET (eXtra implanted junction FET) reference circuit. This architecture provides significant performance improvements over traditional band gap and buried Zener-based references, including one quarter the voltage noise output of band gap references operating at the same current.
| Supply Voltage Range | 6.0 V to 15 V |
|---|---|
| Supply Current (Max) | 15 μA |
| Voltage Noise (0.1 Hz to 10 Hz) | 15 μV p-p typical |
| Output Current | 5 mA |
| Operating Temperature Range | -40°C to +125°C |
| Initial Accuracy (E Grade) | ±3 mV / 0.06% |
| Temperature Coefficient (Max) | 8 ppm/°C |
| Line Regulation (E/F Grades) | 30 ppm/V |
The quiescent current is only 15 μA maximum, making it ideal for battery powered instrumentation.
The device provides three electrical grades with initial output accuracy of ±3 mV, ±6 mV, and ±10 mV.
This device is available in the 8-lead SOIC and 8-lead TSSOP packages.