REF02EJ8

Overview

The REF02EJ8#PBF is a precision 5V bandgap voltage reference manufactured by Analog Devices (formerly Linear Technology). It features an initial accuracy of ±0.3% and a typical temperature coefficient of 5ppm/°C. The device operates within a supply voltage range of 7V to 40V, drawing a maximum quiescent current of 1.4mA. It provides a load current capability of up to 20mA and includes a dedicated temperature output pin for linear voltage proportional to absolute temperature. The component is housed in an 8-lead CERDIP package and is guaranteed to operate over a temperature range of 0°C to 70°C.

Feature Summary

• Provides stable 5V output with high line and load regulation capabilities.
• Includes a dedicated temperature output pin generating a linear voltage proportional to absolute temperature.
• Offers low power consumption suitable for battery-operated or energy-efficient designs.
• Features hermetic ceramic packaging for enhanced environmental stability.

Applications

• A/D and D/A converters
• Precision regulators
• Constant current sources
• Bridge excitation circuits

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish compliance when sourcing. Confirm that the J8 package designation corresponds to the 8-lead CERDIP form factor required for your PCB layout. Ensure the operating environment remains within the specified 0°C to 70°C range, as wider temperature variants require different part numbers such as those ending in HJ8. Cross-reference the manufacturer's obsolete status notices if applicable.

Selection Notes

Select this component when moderate accuracy and low drift are prioritized alongside cost efficiency. The inclusion of a temperature output pin makes it suitable for systems requiring simultaneous voltage referencing and thermal monitoring. Compare against higher-performance alternatives like the LT1019 if tighter tolerance specifications are necessary. Ensure the input voltage stays within the 7V to 40V window to maintain proper regulation.

Part Context

This device belongs to the REF-01/REF-02 series of precision voltage references. While the REF-01 provides a 10V output, the REF-02 variant delivers a fixed 5V reference. Both share similar architectural characteristics, including bandgap technology and low noise profiles. The series is designed to replace older industry-standard references while offering improved performance metrics in a compact footprint.

Replacement Considerations

The datasheet identifies the LT1019 as a related part with improved specifications, specifically 0.05% accuracy and 5ppm/°C drift, while maintaining pin compatibility. Users should verify if the higher precision requirements justify the potential difference in cost or availability compared to the standard REF-02 series.