ADR4525ARZ-R7

Overview

The ADR4525ARZ-R7 is a high-precision, low-power voltage reference providing a fixed 2.5 V output in an 8-lead SOIC package. It features a maximum initial output voltage error of ±0.04% and a temperature coefficient of 4 ppm/°C over the −40°C to +125°C range. The device operates with a supply voltage between 3 V and 15 V, drawing a maximum quiescent current of 950 μA. It supports ±10 mA output current capacity and exhibits an output noise of 1.25 μV p-p from 0.1 Hz to 10 Hz.

Feature Summary

• Utilizes innovative core topology for industry-leading temperature stability and noise performance
• Delivers high accuracy with minimal thermally induced output voltage hysteresis
• Ensures system reliability through low long-term output voltage drift characteristics

Applications

• Precision data acquisition systems
• High resolution data converters
• High precision measurement devices
• Industrial instrumentation
• Medical devices

Procurement Notes

Verify the specific grade suffix (A) against the required initial accuracy and temperature coefficient specifications. Confirm that the R7 packaging designation matches the intended reel or cut tape requirements for automated assembly processes. Ensure the operating environment remains within the specified extended industrial temperature limits.

Selection Notes

Select this component when a fixed 2.5 V reference is required with moderate initial accuracy. The A grade offers a wider temperature coefficient compared to B, C, or D grades. Consider the low dropout voltage and current consumption for portable applications where power efficiency is critical alongside stable reference generation.

Part Context

This part belongs to the ADR452x series of ultralow noise voltage references manufactured by Analog Devices. The family includes variants with different fixed output voltages such as 2.048 V, 3.0 V, and 5.0 V. All members share similar architectural benefits regarding noise reduction and thermal stability while maintaining consistent pin configurations across the SOIC package options.

Replacement Considerations

Other grades within the same family, such as ADR4525BRZ or ADR4525CRZ, offer tighter temperature coefficients but may differ in cost and availability. Verify if the relaxed accuracy of the A grade meets the design constraints before substituting with higher-grade alternatives.