ADA4522-4ARZ

Overview

The ADA4522-4ARZ is a quad-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 with a typical supply current of 830 µA per amplifier. Key electrical parameters include a maximum offset voltage of 5 µV, a gain-bandwidth product of 2.7 MHz, and a unity-gain crossover frequency of 3 MHz. The device provides high common-mode rejection ratios ranging from 130 dB to 160 dB depending on supply conditions.

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 variations.
• Ground sensing inputs allow operation with input voltage ranges that include the negative supply rail.

Applications

• Inductance, capacitance, and resistance (LCR) meter front-end amplifiers
• Load cell and bridge transducer signal conditioning
• High precision shunt current sensing circuits
• Thermocouple and resistance temperature detector (RTD) sensor interfaces

Procurement Notes

Verify the specific package suffix against the ordering guide to ensure compatibility with the required footprint. Confirm that the component meets AEC-Q100 automotive qualification requirements if intended for vehicle applications. Cross-reference the datasheet revision to validate performance specifications at the target operating temperatures.

Selection Notes

Select this component when multiple channels are required in a single package to minimize board space. Consider the 14-lead SOIC package for thermal management and ease of assembly. Evaluate the trade-off between channel count and power consumption, as the quad configuration draws approximately 3.3 mA total supply current.

Part Context

This part belongs to the ADA4522 series, which includes single and dual channel variants. The quad version consolidates four independent amplifiers into one package. All variants share identical core electrical characteristics, including noise density and drift specifications, differing primarily in pinout and channel count.

Replacement Considerations

ADA4522-1ARZ

FAQ

Does the ADA4522-4ARZ require external calibration?

No, the zero-drift technology eliminates the need for external calibration circuits by maintaining low offset voltage and drift over temperature.

What is the input voltage range relative to the supply rails?

The input voltage range includes ground and extends up to approximately 300 mV below the positive supply rail, supporting single-supply ground sensing operations.