ADA4522-4ARZ-R7

Overview

The ADA4522-4ARZ-R7 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 or ±2.25 V to ±27.5 V. Key electrical parameters include a maximum offset voltage of 5 µV, typical offset drift of 22 nV/°C, and input bias current of 50 pA. The device offers a gain bandwidth product of 2.7 MHz, unity-gain crossover of 3 MHz, and -3 dB bandwidth of 6.5 MHz. Supply current per amplifier is typically 830 µA. It provides high CMRR (130 dB minimum) and PSRR (150 dB minimum), with integrated EMI filters for enhanced immunity.

Feature Summary

• Zero-drift architecture optimized for total accuracy over time, temperature, and voltage conditions
• Integrated on-chip EMI filtering for high electromagnetic interference immunity
• Ground sensing inputs with rail-to-rail output capability
• AEC-Q100 qualified for automotive applications

Applications

• Inductance, capacitance, and resistance (LCR) meter front-end amplifiers
• Load cell and bridge transducers
• Automotive sensors and battery management systems
• High precision shunt current sensing
• Programmable logic controller (PLC) input and output amplifiers

Procurement Notes

Verify the specific package suffix 'R' corresponds to the 8-lead SOIC form factor as indicated in the datasheet pin configuration diagrams. Confirm that the '-R7' suffix denotes tape and reel packaging suitable for automated assembly processes. Ensure compatibility with the required operating temperature range of -40°C to +125°C for the intended application environment.

Selection Notes

Select this component when multiple channels are required within a single package footprint. The quad configuration reduces board space compared to using separate dual or single-channel devices. Consider the 830 µA per amplifier supply current for power budget calculations in multi-channel designs. Verify that the 14 mA continuous output current meets the load requirements for all four channels simultaneously.

Part Context

This part belongs to the ADA4522 family of precision amplifiers, which includes single (ADA4522-1) and dual (ADA4522-2) channel variants. All members share identical electrical characteristics and zero-drift technology but differ in channel count and package options. The family is designed for high-accuracy signal conditioning across wide voltage ranges.

Replacement Considerations

Direct functional substitutes within the same family include ADA4522-1ARZ-R7 and ADA4522-2ARZ-R7, though channel counts differ. For quad-channel replacements, verify pinout compatibility and ensure equivalent offset voltage and drift specifications are met.