ADR525BKSZ-REEL7

Overview

The ADR525BKSZ-REEL7 is a high precision shunt voltage reference manufactured by Analog Devices Inc. It provides a fixed 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 (0.1 Hz to 10 Hz) and dynamic output impedance of 0.2 Ω. Packaged in an ultracompact 3-Lead SC-70 (KS) surface-mount package, it includes a trim terminal for voltage adjustment.

Feature Summary

• Ultracompact 3-Lead SC-70 package designed for space-critical applications
• High precision performance with ±0.2% initial accuracy and 40 ppm/°C temperature coefficient
• Low output noise of 18 μV p-p without requiring external compensation capacitors
• Integrated trim terminal allows output voltage adjustment over a ±0.5% range

Applications

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

Procurement Notes

Verify the specific ordering suffix 'BKSZ' against official documentation to confirm Grade B accuracy, SC-70 packaging, and RoHS compliance status. Ensure the component matches the manufacturer's part number exactly to avoid confusion with similar packages or grades. Confirm availability through authorized distributors as supply may be restricted.

Selection Notes

Select this component when a precise 2.5 V reference is required in a minimal footprint. The low minimum operating current of 50 μA makes it suitable for battery-powered designs. The inclusion of a trim terminal offers flexibility for system error correction. Verify that the load current requirements stay within the 50 μA to 15 mA operational range.

Part Context

This part belongs to the ADR520/ADR525/ADR530/ADR540/ADR550 series of high precision shunt voltage references. These devices utilize band gap technology to achieve stable performance across varying temperatures. The series is designed to operate without external capacitors while remaining stable with any capacitive load, simplifying circuit design for portable and automotive applications.

Replacement Considerations

The datasheet indicates pin compatibility with the LM4040/LM4050. Designers should verify electrical specifications such as temperature coefficient and noise levels when substituting these parts.

FAQ

Does the ADR525BKSZ-REEL7 require an external capacitor for stability?

No, the advanced design eliminates the need for an external compensation capacitor, though the device remains stable with any capacitive load.

What is the function of the third terminal on the ADR525BKSZ-REEL7?

The third terminal is a trim terminal that allows adjustment of the output voltage over a ±0.5% range without affecting the temperature coefficient.