ADR3625ARMZ

Overview

The ADR3625ARMZ is a precision micropower voltage reference from Analog Devices Inc., featuring a fixed 2.5 V output in an 8-lead MSOP package. It offers high accuracy with a maximum temperature coefficient of 3 ppm/°C (B grade) and ±0.04% initial error. The device provides up to 70 mA sourcing current, replacing standard LDO regulators. Key specifications include 65 µA quiescent current, 16 V maximum input voltage, and operation across -40°C to +125°C.

Feature Summary

• High precision performance utilizing proprietary DigiTrim technology for calibrated output voltage and temperature coefficient.
• Capable of sourcing up to 70 mA and sinking 20 mA, serving as a direct replacement for low dropout regulators.
• Low thermal hysteresis and long-term drift ensure stable system lifetime accuracy under varying conditions.

Applications

• Precision power supplies
• Portable instrumentation
• Process transmitters

Procurement Notes

Verify the specific grade suffix (e.g., ARMZ-B or ARMZ-A) against project requirements, as B grade specifies tighter tolerances than A grade. Confirm the 8-lead MSOP package matches the PCB footprint. Ensure the design includes the mandatory minimum load capacitance of 0.1 μF for stability. Check for RoHS compliance status if required by local regulations.

Selection Notes

Select this component when high current drive capability is needed alongside precision voltage referencing. The 70 mA sourcing capacity allows it to replace standard LDOs in applications requiring significant load current. Consider the 3 ppm/°C temperature coefficient for environments with wide thermal variations. Verify that the 16 V maximum input voltage accommodates the system supply range.

Part Context

The ADR3625ARMZ belongs to the ADR36xx series of precision voltage references, which also includes the ADR3630 and ADR3650 variants. These devices share a common architecture featuring DigiTrim calibration and micropower design techniques. The series is designed to provide high accuracy and stability in compact surface-mount packages for demanding analog signal chain applications.

Replacement Considerations

ADR3630ARMZ

FAQ

What is the minimum load capacitance required for stable operation?

A minimum load capacitance of 0.1 μF is required for the ADR3625ARMZ to ensure stability during operation.

How does the device handle short-circuit conditions?

The ADR3625ARMZ includes internal current-limit circuitry that limits the output source current to approximately 90 mA in the event of a short circuit to ground.