ADR127BUJZ-REEL7

Overview

The ADR127BUJZ-REEL7 is a micropower, high precision series mode band gap voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 1.25 V with B grade initial accuracy of ±0.12% and a maximum temperature coefficient of 9 ppm/°C over the −40°C to +125°C range. The device features low dropout performance requiring only 1.45 V above the output voltage for stability, an input voltage range of 2.7 V to 18 V, and a typical operating current of 85 μA. It supports a high output current capability of +5 mA sourcing and −2 mA sinking, housed in a tiny 6-lead TSOT (UJ-6) package.

Feature Summary

• Patented temperature-drift curvature correction technique minimizes nonlinearities in output voltage versus temperature characteristics.
• Low dropout architecture enables stable operation with minimal headroom requirements relative to the output voltage.
• Integrated sink and source capability allows flexible load driving without external buffering components.

Applications

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

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's official documentation before procurement. Confirm that the component meets RoHS compliance requirements as indicated in the ordering guide. Ensure the supply chain source provides valid traceability for the Analog Devices brand. Cross-reference the part number with the latest datasheet revision to confirm electrical specifications match design requirements.

Selection Notes

Select this component when a precise 1.25 V reference is required in space-constrained designs utilizing the TSOT package. The B grade specification offers tighter accuracy and lower temperature drift compared to the A grade variant. Consider the 1.45 V minimum dropout requirement when designing the power supply rail to ensure regulation under all load conditions.

Part Context

This component belongs to the ADR12x family of precision micropower LDO voltage references, which also includes the ADR121 and ADR125 models. While sharing similar architectural features and packaging, the ADR127 is distinctively configured for a 1.25 V output level. The family utilizes a patented curvature correction technique to achieve high precision across the extended industrial temperature range.

Replacement Considerations

ADR127AUJZ-REEL7