ADR3550WBRMZ-R7

Voltage Reference Overview

The ADR3550WBRMZ-R7 is a micropower, high-precision CMOS voltage reference with a nominal output of 5.0 V. It features a maximum temperature coefficient of 5 ppm/°C (B grade) and an initial output voltage error of ±0.1%. The device operates within an input voltage range of 5.2 V to 5.5 V and supports an operating temperature range from −40°C to +125°C. It provides an output current capacity of +10 mA source and −3 mA sink, with a maximum quiescent current of 100 μA. The part is qualified for automotive applications under AEC-Q100 standards.

Voltage Reference Feature Summary

• Utilizes proprietary DigiTrim technology for digital trimming of initial accuracy and temperature coefficient during final assembly.
• Features low long-term drift and low output voltage hysteresis to improve lifetime system accuracy.
• Includes an enable pin that allows the device to be shut down or enabled based on input voltage levels.

Voltage Reference Applications

• Automotive battery monitors
• Portable instrumentation
• Process transmitters
• Remote sensors
• Medical instrumentation

Voltage Reference Procurement Notes

Verify the specific B-grade temperature coefficient specification against the latest manufacturer datasheet before integration. Confirm that the MSOP-8 package thermal resistance aligns with your system's power dissipation requirements, particularly in high ambient temperature environments. Ensure the input voltage supply remains strictly within the 5.2 V to 5.5 V range to maintain specified performance metrics.

Voltage Reference Selection Notes

Select this component when a stable 5.0 V reference is required in space-constrained designs due to its compact 8-lead MSOP package. It is suitable for applications demanding low power consumption alongside high precision over a wide industrial and automotive temperature range. Consider the specific input voltage constraints, as the minimum operating voltage is 5.2 V, which may limit compatibility with lower voltage supply rails.

Voltage Reference Part Context

This component belongs to the ADR35xx series of micropower voltage references manufactured by Analog Devices. The series includes variants with different output voltages such as 2.5 V, 3.0 V, 3.3 V, and 4.096 V. All members share similar architectural benefits, including low noise and high accuracy, but differ in their specific output voltage targets and corresponding input voltage ranges.

Voltage Reference Replacement Considerations

ADR3550WARMZ-R7

Voltage Reference FAQ

What is the typical long-term output voltage drift for the ADR3550?

The typical long-term output voltage drift is approximately 30 ppm after 1000 hours of continuous operation at 50°C.

How does the enable pin function affect the device's power consumption?

When the enable pin voltage is below 0.7 V, the device enters shutdown mode with a quiescent current of 5 μA. In normal operation, the quiescent current is typically 85 μA to 100 μA.