ADA4097-2BRZ

Overview

The ADA4097-2BRZ is a dual-channel, precision operational amplifier manufactured by Analog Devices Inc. It features an ultrawide common-mode input range extending from −VS to +VS and beyond, supporting Over-The-Top operation up to 70 V above the negative supply. The device operates on power supplies ranging from +3 V to +50 V (±25 V for PSRR). Key electrical specifications include a typical gain-bandwidth product of 130 kHz, a maximum input offset voltage of ±60 µV, and a low quiescent current of 32.5 µA per channel. It provides high open-loop gain and robust performance in abusive environments.

Feature Summary

• Over-The-Top input capability allowing operation well beyond the positive supply rail
• Precision characteristics with low input offset voltage and drift
• Robust design tolerant to overdrive conditions without phase reversal
• Low power consumption suitable for battery-powered applications

Applications

• Industrial sensor conditioning
• Supply current sensing
• Battery and power supply monitoring
• Front-end amplifiers in abusive environments
• 4 mA to 20 mA transmitters

Procurement Notes

Verify that the specific part number suffix 'B' corresponds to the B grade specification regarding input offset voltage limits as defined in the official datasheet. Confirm the package type matches the required PCB footprint, as this model is available in multiple packages including SOIC_N, MSOP, and LFCSP. Ensure ESD precautions are followed during handling due to the sensitivity of the input stages.

Selection Notes

Select the ADA4097-2BRZ when designing circuits requiring inputs to exceed the positive supply voltage while maintaining precision. It is appropriate for single-supply or split-supply systems where low power consumption is critical. Consider the thermal resistance and power dissipation limits if operating at elevated ambient temperatures or driving significant loads.

Part Context

This component belongs to the ADA4097 family of robust, precision op amps designed for industrial applications. The dual-channel variant offers two independent amplifiers in one package, reducing board space compared to single-channel solutions. It complements other Analog Devices precision amplifiers by offering unique Over-The-Top functionality combined with low noise and high CMRR.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as the ADA4097-2ARZ or ADA4097-2ARMZ, ensuring the grade (B vs H) meets the offset voltage requirements. Verify that any substitute maintains the Over-The-Top input range and supply voltage specifications.