ADR540BRT-REEL7

Overview

The ADR540BRT-REEL7 is a high precision shunt mode voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 4.096 V with an initial accuracy of ±0.2%. The device features a maximum temperature coefficient of 40 ppm/°C and operates within an industrial temperature range of −40°C to +85°C. It requires an operating current between 50 μA and 15 mA and is housed in a 3-Lead SOT-23 package.

Feature Summary

• Ultracompact packaging in SC70 and SOT-23-3 form factors for space-critical applications
• Low temperature drift of 40 ppm/°C with initial accuracy better than ±0.2%
• Eliminates the need for external compensation capacitors while remaining stable with any capacitive load
• Includes a trim terminal allowing output voltage adjustment over a ±0.5% range without affecting temperature coefficient

Applications

• Portable, battery-powered equipment
• Automotive systems
• Data acquisition systems
• Instrumentation and process control
• Energy measurement

Procurement Notes

Verify the specific part number against official manufacturer documentation to confirm pinout compatibility and electrical specifications. Ensure the selected variant matches the required output voltage and accuracy grade for the intended application environment. Cross-reference datasheet revisions to validate performance characteristics and ordering information.

Selection Notes

Select this component for designs requiring a precise, low-drift voltage reference in a minimal footprint. The B-grade specification ensures tighter tolerance compared to A-grade alternatives. Consider the available trim terminal if system-level calibration is necessary to compensate for board-level errors or supply variations.

Part Context

This component belongs to the ADR520/ADR525/ADR530/ADR540/ADR550 series of high precision shunt voltage references. These devices utilize band gap technology to achieve stability across varying temperatures. The series offers multiple fixed output voltages to suit different circuit requirements while maintaining consistent performance metrics.

Replacement Considerations

The datasheet indicates pin compatibility with the LM4040 and LM4050 series. Designers should verify that the replacement part meets the specific current and voltage requirements of the existing design before substitution.