ADA4522-2ARMZ-RL

Overview

The ADA4522-2ARMZ-RL is a dual-channel, zero-drift operational amplifier featuring ultralow noise and rail-to-rail output. It operates on supply voltages from 4.5 V to 55 V (±2.25 V to ±27.5 V). Key electrical parameters include a maximum offset voltage of 5 µV, an extremely low drift of 22 nV/°C, and a typical voltage noise density of 5.8 nV/√Hz. The device offers a gain bandwidth product of 2.7 MHz, unity-gain crossover at 3 MHz, and a typical supply current of 830 µA per amplifier. It supports single-supply operation with ground sensing inputs.

Feature Summary

• Integrated EMI filters provide high immunity to electromagnetic interference without external components.
• Zero-drift architecture ensures optimized total accuracy over time, temperature, and voltage conditions.
• Ground sensing inputs allow for single-supply operation including the negative rail.

Applications

• Inductance, capacitance, and resistance (LCR) meter front-end amplifiers
• Load cell and bridge transducers
• High precision shunt current sensing
• Thermocouple and resistance temperature detector (RTD) sensors

Procurement Notes

Verify the specific ordering suffix RL against the manufacturer's official documentation to confirm reel packaging specifications. Ensure compatibility with the required operating voltage range and temperature ratings before integration. Cross-reference the pin configuration with the datasheet to validate board layout requirements.

Selection Notes

Select this component for applications requiring high DC accuracy and low noise in high-voltage environments. The integrated EMI filtering simplifies design by removing the need for external suppression circuits. Consider the 55 V maximum supply rating when designing for industrial or automotive power systems.

Part Context

This device belongs to the ADA4522 series, which includes single, dual, and quad channel variants. The series is characterized by its zero-drift technology and ability to operate across wide supply voltage ranges. It is designed to replace traditional chopper-stabilized amplifiers while offering superior noise performance and simplified system integration.

Replacement Considerations

ADA4522-2ARMZ