ZR285R02STOA

Overview

The ZR285R02STOA is a precision shunt voltage reference manufactured by Diodes Incorporated. It provides a fixed output voltage of 2.5 V with an initial accuracy of 2%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 90 PPM/°C. Maximum shunt current is 20 mA, while the minimum operating current is 20 µA. It utilizes a TO-226-3 (TO-92-3) through-hole package.

Feature Summary

• Provides stable 2.5 V reference for low knee applications
• Ensures measurement accuracy with 2% initial tolerance
• Operates reliably across extended industrial temperature ranges

Applications

• Precision analog-to-digital converter references
• Battery-powered instrumentation circuits
• Low-power sensor signal conditioning

Procurement Notes

Verify component authenticity due to discontinued status. Confirm package integrity as TO-92 variants may show handling wear. Cross-reference datasheet revisions to ensure parameter consistency with original design specifications before integration into production systems.

Selection Notes

Select this component when a compact, low-cost shunt reference is required for 2.5 V applications. Consider the 20 µA minimum current requirement for biasing networks. Evaluate thermal stability needs against the 90 PPM/°C coefficient for high-precision environments.

Part Context

This part belongs to the ZR285 series of low-knee voltage references designed for battery-operated equipment. It serves as a cost-effective alternative to higher-power references in space-constrained designs requiring moderate precision and low quiescent current consumption.

Replacement Considerations

ZR285R01STZ offers 1% accuracy instead of 2%. ZR285Y01STZ provides similar performance in E-Line packaging. Verify pinout compatibility and thermal characteristics when substituting.