ADA4528-1ACPZ-RL

Overview

The ADA4528-1ACPZ-RL is a single-channel, precision, ultralow noise, zero-drift operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities and operates on a single supply voltage ranging from 2.2 V to 5.5 V or dual supplies of ±1.1 V to ±2.75 V. The device exhibits a maximum offset voltage of 2.5 μV and an offset drift of 0.015 μV/°C. Noise performance includes 97 nV p-p in the 0.1 Hz to 10 Hz band and 5.6 nV/√Hz at 1 kHz. It maintains unity-gain stability with a unity-gain crossover frequency of 4 MHz and a gain bandwidth product of 3 MHz at AV = +100. The component is housed in an 8-lead LFCSP package.

Feature Summary

• Features a patented chopping technique that provides ultralow input offset voltage and minimal drift across temperature variations.
• Delivers exceptional common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) through continuous correction of DC errors.
• Supports rail-to-rail input and output swing while maintaining unity-gain stability for versatile circuit configurations.

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 ACPZ-RL against the manufacturer's current datasheet to confirm the package type and reel packaging specifications. Ensure the revision level matches the required design documentation. Cross-reference the part number with official distributor catalogs to validate availability status and compliance certifications prior to procurement.

Selection Notes

Select this component for applications requiring high DC accuracy and low noise without external trimming. It is suitable for designs needing rail-to-rail operation within a wide supply voltage range. Consider the thermal resistance characteristics when designing PCB layouts for surface-mount packages to ensure reliable operation across the specified industrial temperature range.

Part Context

This device belongs to the ADA4528 family of zero-drift operational amplifiers, which also includes the dual-channel ADA4528-2 variant. The family utilizes a unique chopper architecture to achieve microrvolt-level offset voltages. The ADA4528-1 specifically provides a single amplifier channel, making it ideal for space-constrained designs compared to multi-channel alternatives.

Replacement Considerations

The ADA4528-2 serves as the dual-channel equivalent within the same family. Designers should verify pin compatibility and channel count requirements when substituting between single and dual variants. Other zero-drift amplifiers may require adjustments to biasing networks due to differences in input protection structures.