ADR395AUJZ-R2

Overview

The ADR395AUJZ-R2 is a precision band gap voltage reference providing a fixed 5.0 V output in a compact 5-lead TSOT package. It features an initial accuracy of ±6 mV and a temperature coefficient of 25 ppm/°C across the −40°C to +125°C range. The device operates with a supply current of 140 μA maximum and supports up to 5 mA output current. It includes a shutdown mode drawing 3 μA, requires no external capacitors for stability, and maintains a low dropout voltage of 300 mV.

Feature Summary

• Patented curvature correction techniques achieve low temperature drift within a tiny footprint.
• Advanced design eliminates the need for external capacitors, reducing board space and system cost.
• Integrated shutdown feature allows for significant power reduction in battery-operated applications.

Applications

• Battery-powered instrumentation
• Portable medical instrumentation
• Data acquisition systems
• Industrial process controls

Procurement Notes

Verify the specific grade suffix (e.g., AUJZ) against the manufacturer's ordering guide to confirm the exact temperature coefficient and accuracy class. Ensure the input voltage range meets the minimum headroom requirements for the selected load conditions. Confirm that the TSOT-23-5 package dimensions align with the target PCB layout constraints.

Selection Notes

Select this component when a stable 5.0 V reference is required in space-constrained designs. The A-grade specification provides a balance of performance and cost for general-purpose applications. Consider the B-grade variant if lower temperature drift is necessary. Evaluate the shutdown pin functionality to determine if power management benefits are needed for the specific system architecture.

Part Context

This part belongs to the ADR39x family of micropower, low noise precision voltage references from Analog Devices. The family includes variants with different output voltages such as 2.5 V and 4.096 V. All members share the same compact 5-lead TSOT package and architectural features, offering a scalable solution for various precision analog circuit requirements.

Replacement Considerations

Direct substitutes within the same family include the ADR395BUJZ for improved temperature stability. Other series like the ADR381 or ADR360 offer different trade-offs in noise and current consumption but may require circuit adjustments due to differing pinouts or specifications.

FAQ

Does the ADR395AUJZ-R2 require external capacitors for stability?

No, the advanced design of the ADR395 eliminates the need for external capacitors for circuit stability under any load condition.

How does the shutdown pin affect the output voltage?

During shutdown mode, the output becomes a high-impedance state, where its potential is determined by external circuitry rather than the internal reference.