ADR3525WARMZ-R7

Overview

The ADR3525WARMZ-R7 is a micropower, high-precision CMOS voltage reference with a fixed output of 2.5 V. It features an initial output voltage error of ±0.1% and a maximum temperature coefficient of 8 ppm/°C for the A grade. The device operates over an extended temperature range from −40°C to +125°C and supports an input voltage range of 2.7 V to 5.5 V. It provides an output current capacity of +10 mA source and −3 mA sink, with a maximum quiescent current of 100 μA in normal operation. The part utilizes DigiTrim technology for digital trimming during assembly.

Feature Summary

• Utilizes proprietary DigiTrim technology for digital trimming of initial accuracy and temperature coefficient during final assembly.
• Features low long-term output voltage drift and low output voltage hysteresis to improve lifetime system accuracy.
• Includes an enable/shutdown pin that allows for low-power shutdown mode with minimal quiescent current consumption.

Applications

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

Procurement Notes

Verify the specific grade (A or B) required for your application, as the datasheet specifies different temperature coefficients for each. Confirm that the MSOP-8 package and reel packaging align with your manufacturing equipment. Ensure the input voltage supply remains within the 2.7 V to 5.5 V range to maintain specified performance levels across the full operating temperature spectrum.

Selection Notes

Select this component when a stable 2.5 V reference is needed in space-constrained designs requiring low power consumption. The A grade offers an 8 ppm/°C temperature coefficient, suitable for general precision applications. Consider the 10 mA sourcing capability if driving moderate loads directly. Verify thermal management requirements if operating at high ambient temperatures with significant load currents.

Part Context

This device belongs to the ADR35xx series of micropower voltage references manufactured by Analog Devices. The series includes variants with different fixed output voltages, such as 3.0 V, 3.3 V, 4.096 V, and 5.0 V. All members share similar architectural benefits, including low noise, low dropout voltage, and automotive qualification, packaged in an 8-lead MSOP form factor.

Replacement Considerations

Direct functional substitutes within the same family include ADR3530WARMZ-R7 (3.0 V), ADR3533WARMZ-R7 (3.3 V), ADR3540WARMZ-R7 (4.096 V), and ADR3550WARMZ-R7 (5.0 V). These parts share identical pinouts and package dimensions but differ in output voltage specifications.