ADR3625ARMZ-R7

Overview

The ADR3625ARMZ-R7 is a precision micropower voltage reference with a fixed 2.5 V output, housed in an 8-lead MSOP package. It features a maximum temperature coefficient of 3 ppm/°C (B grade) and ±0.04% initial accuracy. The device supports up to 16 V input, delivers 70 mA sourcing current, and operates from -40°C to +125°C. Key electrical parameters include 65 µA quiescent current, 3 ppm p-p noise (0.1 Hz to 10 Hz), and 0.25 V dropout voltage.

Feature Summary

• High current output capability allows direct replacement for standard low dropout regulators
• Proprietary DigiTrim technology ensures high precision and low thermal hysteresis
• Micropower design maintains low static and shutdown currents
• Integrated enable pin provides logic-compatible control

Applications

• Precision power supplies
• Portable instrumentation
• Process transmitters
• Remote sensors
• Medical instrumentation

Procurement Notes

Verify the specific grade (A or B) required for your application, as performance metrics like temperature coefficient and initial accuracy vary between them. Confirm that the R7 suffix corresponds to the reel packaging format needed for your assembly line. Ensure the component meets RoHS compliance standards relevant to your region before finalizing procurement.

Selection Notes

Select this component when high load current is necessary alongside tight voltage stability. The 8-lead MSOP package suits space-constrained designs. Consider the 0.1 μF minimum load capacitance requirement during circuit layout. Evaluate the 16 V maximum input rating against your system supply rails to ensure adequate headroom.

Part Context

This part belongs to the ADR3625/ADR3630/ADR3650 family of precision voltage references. While sharing similar architecture and features, the ADR3625 is distinguished by its 2.5 V nominal output and 0.25 V dropout voltage. Other family members offer different fixed voltages such as 3.0 V or 5.0 V.

Replacement Considerations

The datasheet lists the LT6658 and REF192 as comparable high-current alternatives within the Analog Devices portfolio. Verify pin compatibility and electrical specifications against these parts if considering a substitution.