ADR525BRTZ-REEL7

Overview

The ADR525BRTZ-REEL7 is a high precision shunt voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 2.5 V with an initial accuracy of ±0.2% and a maximum temperature coefficient of 40 ppm/°C. The device operates within an industrial temperature range of −40°C to +85°C and requires a minimum operating current of 50 μA, supporting up to 15 mA. It features ultralow output noise of 18 μV p-p in the 0.1 Hz to 10 Hz bandwidth and includes a trim terminal for adjusting the output voltage over a ±0.5% range without affecting the temperature coefficient.

Feature Summary

• Ultracompact 3-Lead SOT-23-3 package design suitable for space-critical applications
• Integrated trim terminal allows adjustment of output voltage over a ±0.5% range
• Operates stably without requiring an external compensation capacitor
• Low power consumption with a minimum operating current of 50 μA

Applications

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

Procurement Notes

Verify that the specific part number matches the required Grade B specifications, including the 2.5 V output and 40 ppm/°C temperature coefficient. Confirm the package type is 3-Lead SOT-23-3 (RT) as indicated by the model suffix. Ensure compliance with RoHS standards if required by the manufacturing environment. Check for any specific handling precautions related to ESD sensitivity during assembly.

Selection Notes

Select this component when a precise 2.5 V reference is needed in a compact surface-mount form factor. It is suitable for designs requiring low quiescent current and stability across the industrial temperature range. Consider the trim capability if system-level calibration is necessary to compensate for board-level errors or load variations.

Part Context

This device belongs to the ADR520/ADR525/ADR530/ADR540/ADR550 series of high precision shunt voltage references. These parts utilize band gap technology to achieve stable performance. The ADR525 variant specifically targets the 2.5 V output requirement, offering improved temperature coefficient performance compared to older generations like the LM4040.

Replacement Considerations

Pin compatible with the LM4040/LM4050.

FAQ

Does the ADR525BRTZ-REEL7 require an external capacitor for stability?

No, the advanced design eliminates the need for an external capacitor between the positive and negative terminals, though it remains stable with any capacitive load.

What is the purpose of the third pin on the ADR525BRTZ-REEL7?

The third pin is a TRIM terminal that allows users to adjust the output voltage over a ±0.5% range to trim out system errors without affecting the temperature coefficient.