ADR4550ARZ-R7

Overview

The ADR4550ARZ-R7 is a series voltage reference providing a fixed 5.0 V output in an 8-lead SOIC package. It features a maximum initial accuracy of ±0.04% and a temperature coefficient of 2 ppm/°C over the −40°C to +125°C range. The device operates with an input voltage between 3 V and 15 V, drawing a maximum quiescent current of 950 μA. It supports up to 10 mA sourcing and sinking current with a low dropout voltage of 300 mV at 2 mA load.

Feature Summary

• Ultra-low noise performance with typical 2.8 μV p-p output noise from 0.1 Hz to 10 Hz
• High precision stability characterized by low long-term drift and minimal thermal hysteresis
• Low power consumption suitable for portable equipment with high ripple rejection ratio

Applications

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

Procurement Notes

Verify the specific grade (A or B) required for your application, as the base part number covers multiple grades with different accuracy specifications. Confirm that the R7 suffix corresponds to the reel packaging format needed for your assembly line. Ensure the 8-lead SOIC footprint matches your PCB design constraints before finalizing procurement.

Selection Notes

Select this component when a stable 5.0 V reference is required with strict noise and accuracy limits. Compare against other members of the ADR45xx family if different output voltages are needed. Consider the extended industrial temperature range and low dropout characteristics for applications with limited supply headroom.

Part Context

This device belongs to the ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 family of ultralow noise, high accuracy voltage references. These parts utilize an innovative core topology to achieve industry-leading temperature stability and noise performance while maintaining low power consumption across the extended operating temperature range.

Replacement Considerations

Other members of the ADR45xx family such as ADR4533 or ADR4540 may serve as alternatives if different output voltages are acceptable. Verify pin compatibility and thermal resistance requirements when substituting.