ADR125BUJZ-REEL7

Overview

The ADR125BUJZ-REEL7 is a micropower, high precision series mode band gap voltage reference manufactured by Analog Devices Inc. It provides a fixed nominal output voltage of 5.0 V with B grade initial accuracy of ±0.12% and a maximum temperature coefficient of 9 ppm/°C across the −40°C to +125°C range. The device features low dropout performance requiring only 300 mV above the output voltage for stable operation, supporting an input range from 5.3 V to 18 V. It delivers a source current up to +5 mA and sinks up to −2 mA while maintaining a typical quiescent operating current of 85 μA.

Feature Summary

• Patented temperature-drift curvature correction technique minimizes nonlinearities in output voltage versus temperature characteristics.
• Low dropout architecture requires minimal headroom voltage above the nominal output for stable regulation.
• Micropower design combines high precision with low typical operating current suitable for energy-constrained systems.

Applications

• Battery-powered instrumentation
• Portable medical equipment
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and RoHS compliance status. Confirm that the component matches the exact manufacturer part number before integration into designs. Ensure supply chain sources provide valid traceability documents. Check for any recent product change notices or lifecycle updates directly from the manufacturer.

Selection Notes

Select this component when a precise 5.0 V reference is required with tight initial accuracy and low temperature drift. The low quiescent current makes it appropriate for battery-operated designs where power conservation is critical. Verify that the input voltage remains within the specified minimum dropout requirements relative to the load conditions.

Part Context

This component belongs to the ADR12x family of micropower LDO voltage references housed in a tiny TSOT (UJ-6) package. The family includes variants with different nominal output voltages, such as the ADR121 for 2.5 V and ADR127 for 1.25 V outputs. All members share similar architectural features including low dropout capability and micropower consumption profiles.

Replacement Considerations

Direct functional substitutes within the same family include the ADR121BUJZ-REEL7 for 2.5 V applications and the ADR127BUJZ-REEL7 for 1.25 V outputs. Cross-family replacements require verification of pin compatibility and electrical parameter alignment.