REF02AH

Overview

The REF02AH is a precision voltage reference providing a nominal 5V output with ±0.3% initial accuracy and a typical temperature coefficient of 5ppm/°C. It operates over an extended temperature range of –55°C to 125°C in an 8-lead TO-5 metal can package. The device features low noise (10µV p-p), high line rejection, and includes a dedicated temperature output pin for the REF-02 variant. It supports a wide input voltage range from 7V to 40V with a maximum quiescent current of 1.4mA.

Feature Summary

• Provides stable 5V bandgap reference output with high initial accuracy
• Includes dedicated temperature output pin proportional to absolute temperature
• Operates reliably across extended industrial and military temperature ranges
• Features short-circuit protection and low power consumption

Applications

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

Procurement Notes

Verify the specific ordering suffix and lead finish requirements against the manufacturer's current documentation. Confirm that the 8-lead TO-5 metal can package meets your mechanical constraints. Ensure compatibility with existing circuit designs regarding input voltage ranges and load current capabilities before finalizing procurement decisions.

Selection Notes

Select this component when extended temperature operation below 0°C is required, as standard variants may be limited to 0°C minimums. Consider the REF02AH for applications needing a dedicated temperature sensing output alongside voltage referencing. Evaluate the TO-5 package suitability for environments requiring hermetic sealing or robust mechanical mounting compared to plastic alternatives.

Part Context

This part belongs to the REF-01/REF-02 family of precision bandgap references manufactured by Analog Devices Inc. (formerly Linear Technology). The REF-02 variant specifically adds a temperature output capability not present in the REF-01. The 'H' designation indicates the 8-lead TO-5 metal can package, while 'A' denotes the extended temperature grade.

Replacement Considerations

The LT1019 is listed as a related part with improved specifications and pin compatibility. Verify electrical parameter differences and package availability when considering substitutes.