REF02EJ

Overview

The REF02EJ is a precision voltage reference and temperature transducer manufactured by Analog Devices Inc. It provides a stable 5 V output with an initial accuracy of ±0.3% maximum at 25°C. The device features excellent temperature stability with a coefficient of 8.5 ppm/°C maximum over the operating range. It operates on a single supply input voltage ranging from 7 V to 40 V, drawing a quiescent current of 1.4 mA maximum. The unit supports a load current of 10 mA and includes a dedicated temperature monitoring pin (Pin 3) that outputs approximately 1.96 mV/°C. The component is housed in an 8-lead TO-99 metal package.

Feature Summary

• Provides a fixed 5 V precision output with high initial accuracy and low noise characteristics.
• Includes a dedicated temperature sensing terminal for linear voltage-based thermal monitoring.
• Capable of driving loads up to 10 mA while maintaining regulation across a wide input voltage range.
• Features short-circuit protection and requires no external components for basic operation.

Applications

• Digital voltmeters
• Portable instrumentation
• Analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) references

Procurement Notes

Verify the specific suffix 'J' corresponds to the 8-Lead TO-99 metal package configuration when sourcing. Confirm the operating temperature range requirement matches the -40°C to +85°C specification for the REF02E variant. Ensure ESD precautions are implemented during handling due to device sensitivity. Check for RoHS compliance status if required by assembly specifications.

Selection Notes

Select the REF02EJ when a 5 V reference with ±0.3% initial accuracy is required within the -40°C to +85°C industrial temperature range. Choose this model over the REF02A or REF02 variants if the wider -55°C to +125°C military range is not necessary. Consider the integrated temperature output feature if system thermal monitoring is desired without additional sensors. Verify that the TO-99 package form factor fits the mechanical constraints of the design.

Part Context

The REF02 series consists of precision bandgap voltage references designed for applications requiring stable DC voltages. The REF02 family includes multiple grades (A, C, D, E, H) offering varying levels of accuracy and temperature performance. The REF02EJ specifically represents the industrial grade version packaged in a hermetic metal can, suitable for environments where robustness and moderate temperature stability are prioritized over extreme range capabilities.

Replacement Considerations

Refer to the ADR02 for new designs as indicated in the datasheet general description. No direct public substitute part numbers are listed in the provided documentation.