ADR390/ADR391/ADR392/ADR395 is a micropower, low noise precision voltage reference with shutdown function. It features a compact 5-lead TSOT package, low temperature coefficient, high initial accuracy, low output noise, low dropout and supply current. It is suitable for applications such as battery-powered instrumentation, portable medical instrumentation, data acquisition systems, industrial process controls, and automotive.
This datasheet describes the ADR390/ADR391/ADR392/ADR395 family of precision bandgap voltage references available in compact 5-lead TSOT packages. These devices feature low temperature coefficients, ultralow output noise, and low dropout voltage, making them suitable for battery-powered instrumentation, portable medical devices, and data acquisition systems. The family includes models with output voltages of 2.048 V, 2.5 V, 4.096 V, and 5.0 V.
| Output Voltage (ADR390) | 2.048 V |
|---|---|
| Output Voltage (ADR391) | 2.5 V |
| Output Voltage (ADR392) | 4.096 V |
| Output Voltage (ADR395) | 5.0 V |
| Temperature Coefficient (B grade) | 9 ppm/°C |
| Temperature Coefficient (A grade) | 25 ppm/°C |
| Initial Accuracy (B grade) | ±4 mV maximum |
| Initial Accuracy (A grade) | ±6 mV maximum |
| Output Noise | 5 μV p-p |
| Dropout Voltage | 300 mV |
| Shutdown Supply Current | 3 μA maximum |
| Operating Supply Current | 120 μA maximum |
| Operating Temperature Range | −40°C to +125°C |
| Output Current | 5 mA |
No, the advanced design eliminates the need for external capacitors.
The maximum shutdown supply current is 3 μA.
The device requires a minimum supply of 300 mV above the output voltage.