ADA4528-2ARMZ

Overview

The ADA4528-2ARMZ 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 a single supply of 2.2 V to 5.5 V or dual supplies of ±1.1 V to ±2.75 V. Key electrical specifications include a maximum offset voltage of 2.5 µV, an offset voltage drift of 0.015 µV/°C, and a voltage noise density of 5.9 nV/√Hz at 1 kHz. The device offers a gain bandwidth product of 3.4 MHz, a slew rate of 500 mV/µs, and a minimum common-mode rejection ratio of 160 dB. It is housed in an 8-lead MSOP package and functions within an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Zero-drift architecture utilizing chopping techniques to eliminate 1/f noise and minimize DC errors.
• Rail-to-rail input and output capability for maximizing dynamic signal range.
• Ultralow broadband noise density suitable for high-precision signal conditioning.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure compatibility with required packaging and environmental standards. Confirm that the component meets all necessary regulatory compliance requirements for the intended deployment environment before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring high precision and low noise without the need for external calibration. Ensure the design accommodates the specified supply voltage range and thermal characteristics. Consider the 8-lead MSOP package dimensions during PCB layout planning to maintain optimal performance and reliability.

Part Context

This part belongs to the ADA4528 series of zero-drift operational amplifiers from Analog Devices. The series includes single-channel (ADA4528-1) and dual-channel (ADA4528-2) variants. These amplifiers are designed for applications demanding high accuracy and stability over wide temperature ranges, leveraging advanced chopper stabilization technology.

Replacement Considerations

Consult official datasheets for compatible alternatives such as the ADA4528-1 for single-channel requirements or other zero-drift amplifiers within the Analog Devices portfolio. Verify pinout compatibility and electrical parameter alignment before substitution.

FAQ

What is the typical voltage noise density of the ADA4528-2?

The voltage noise density is typically 5.6 nV/√Hz at 1 kHz with a gain of +100 and a 2.5 V supply.

Is the ADA4528-2 unity-gain stable?

Yes, the ADA4528-2 is unity-gain stable.