ADR4550ARZ

Overview

The ADR4550ARZ is a series precision voltage reference manufactured by Analog Devices Inc., providing a fixed output of 5.0 V. It operates within an input voltage range of 3 V to 15 V and supports a maximum load current of 10 mA for both sourcing and sinking. The device features a maximum initial accuracy of ±0.04% and a temperature coefficient of 2 ppm/°C over the extended industrial operating temperature range of −40°C to +125°C. Quiescent current is limited to 950 μA, with a low dropout voltage of 300 mV at 2 mA. It is housed in an 8-lead SOIC package.

Feature Summary

• Utilizes innovative core topology to achieve high accuracy and industry-leading temperature stability.
• Features ultralow noise performance and low thermally induced output voltage hysteresis.
• Supports bidirectional load currents with a maximum capacity of 10 mA source and sink.
• Qualified for automotive applications under AEC-Q100 standards.

Applications

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

Procurement Notes

Verify the specific grade (B, C, or D) required for your application, as temperature coefficients and operating ranges vary by grade. Confirm that the 8-lead SOIC package aligns with your PCB footprint. Ensure input voltage remains within the 3 V to 15 V limit to maintain specified regulation. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a stable 5.0 V reference is needed with low noise and high accuracy. Consider the B grade for full industrial temperature coverage (-40°C to +125°C). Evaluate the 300 mV dropout voltage against your minimum supply rail. Compare quiescent current requirements against other references if power efficiency is critical for portable designs.

Part Context

The ADR4550ARZ belongs to the ADR45xx family of ultralow noise, high accuracy voltage references from Analog Devices. This series includes variants with different fixed output voltages such as 2.048 V, 2.5 V, 3.0 V, 3.3 V, and 4.096 V. All members share similar architectural benefits, including low drift and high thermal stability, making them suitable for demanding analog signal chain applications.

Replacement Considerations

ADR4550ARZ-R7: Same electrical specifications and functionality; differs only in reel packaging format instead of tube.