REF02H

Overview

The REF02H is a precision 5V bandgap voltage reference manufactured by Analog Devices Inc. (formerly Linear Technology). It provides a stable output voltage with an initial accuracy of ±0.3% and a typical temperature coefficient of 5ppm/°C. The device operates within an input voltage range of 7V to 40V and draws a maximum quiescent supply current of 1.4mA. It features a dedicated temperature output pin providing a linear voltage proportional to absolute temperature. The component is housed in an 8-lead TO-5 metal can package and is guaranteed to operate over a temperature range of -55°C to 125°C.

Feature Summary

• Provides a fixed 5V output with high initial accuracy and low drift characteristics suitable for precision applications.
• Includes a dedicated temperature output pin that generates a linear voltage proportional to absolute temperature.
• Features high line rejection and low noise performance with minimal supply current consumption.

Applications

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

Procurement Notes

Verify the specific suffix 'H' corresponds to the 8-lead TO-5 metal can package and the extended industrial temperature range of -55°C to 125°C. Confirm lead-free finish requirements if applicable, as historical data indicates both leaded and lead-free variants exist within the REF02 family. Ensure compatibility with existing PCB footprints designed for the TO-5 metal can form factor.

Selection Notes

Select the REF02H when a fixed 5V reference with low drift and a temperature monitoring capability is required. It is suitable for designs needing moderate accuracy without the complexity of adjustable references. Consider the TO-5 package constraints regarding board space and thermal management compared to plastic DIP alternatives like the REF02HN8.

Part Context

The REF02H belongs to the REF-01/REF-02 series of precision voltage references originally developed by Linear Technology Corporation, now part of Analog Devices Inc. This series is designed for applications requiring stable voltage references with low power consumption. The REF02 specifically provides a 5V output, distinguishing it from the 10V REF01 and 2.5V REF03 variants.

Replacement Considerations

The LT1019 is a pin-compatible alternative offering improved specifications with 0.05% accuracy and 5ppm/°C drift. Other REF02 family members such as REF02HN8 or REF02HPZ provide similar electrical functions in different packages.