ADA4528-2ARMZ-RL

Overview

The ADA4528-2ARMZ-RL is a dual-channel, precision, ultralow noise, zero-drift operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output swing and operates on single supplies from 2.2 V to 5.5 V or dual supplies from ±1.1 V to ±2.75 V. The device offers a maximum offset voltage of 2.5 µV and a drift of 0.015 µV/°C. Noise performance includes 97 nV p-p (0.1 Hz to 10 Hz) and 5.6 nV/√Hz at 1 kHz. It provides a unity-gain crossover frequency of 4 MHz, a gain bandwidth product of 3 MHz at AV = +100, and a slew rate of 0.5 V/µs. The part is specified over an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Features a patented chopping technique for ultralow offset voltage and drift correction.
• Provides rail-to-rail input and output capability with unity-gain stability.
• Delivers high open-loop gain and excellent common-mode rejection ratio.
• Operates within a wide supply voltage range suitable for low-voltage applications.

Applications

• Thermocouple and thermopile signal conditioning
• Load cell and bridge transducer amplification
• Precision instrumentation systems
• Electronic scales
• Medical instrumentation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure compatibility with the intended PCB layout regarding thermal dissipation and pin configuration. Cross-reference the datasheet revision date to validate electrical characteristics against the latest published standards before finalizing procurement orders.

Selection Notes

Select this component for applications requiring precise amplification of low-level signals where DC error sources are critical. The zero-drift architecture minimizes offset variations over temperature, making it suitable for high-resolution sensor interfaces. Consider the rail-to-rail output swing when designing for maximum dynamic range in single-supply environments.

Part Context

This device belongs to the ADA4528 family of precision operational amplifiers designed for high-performance analog signal processing. It complements other zero-drift solutions by offering a balance of ultralow noise and minimal DC offset. The dual-channel configuration allows for cost-effective implementation of differential sensing circuits or dual-channel data acquisition systems.

Replacement Considerations

ADA4528-2ARMZ