REF02HZ

Overview

The REF02HZ is a precision voltage reference IC from Analog Devices Inc., providing a fixed 5.0 V output with ±0.3% initial accuracy. It features an excellent temperature coefficient of 8.5 ppm/°C and low noise of 15 µVp-p (0.1 Hz to 10 Hz). The device operates on a supply voltage range of 7 V to 40 V, drawing 1.4 mA of supply current while delivering up to 10 mA of output current. It is housed in an 8-pin CERDIP package and supports an extended operating temperature range of -55°C to 125°C.

Feature Summary

• Provides high-precision 5.0 V output with minimal variation across supply, temperature, and load changes
• Delivers stable performance with low noise characteristics suitable for sensitive analog circuits
• Offers wide input voltage compatibility and robust thermal stability over extended industrial ranges

Applications

• High-resolution data acquisition systems requiring precise voltage references
• Precision instrumentation and measurement equipment
• Calibration sources for test and measurement devices
• Analog-to-digital converter (ADC) reference inputs

Procurement Notes

Verify the specific suffix HZ against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with existing board layouts for 8-pin CERDIP packages. Check for RoHS compliance status and lead-free availability as per current manufacturing notices. Confirm end-of-life or obsolescence status before finalizing procurement plans.

Selection Notes

Select the REF02HZ when a fixed 5 V reference with ±0.3% accuracy and 8.5 ppm/°C drift is required. It is suitable for applications needing low noise and wide operating temperature ranges. Compare against REF02EZ for similar specs but different temperature grades. Consider REF02HN8#PBF if higher output current capability is needed.

Part Context

The REF02HZ belongs to the REF01/REF02/REF03 series of precision voltage references designed by Analog Devices. These devices are known for their stability and low noise, making them ideal for high-performance analog applications. The REF02 variant specifically provides a 5 V output, complementing the 10 V REF01 and 2.5 V REF03 options within the same family.

Replacement Considerations

Official substitutes include REF02EZ and REF02CZ. Verify pinout and electrical specifications match before substitution.