ADA4098-2BRMZ

Overview

The ADA4098-2BRMZ is a dual-channel, precision operational amplifier manufactured by Analog Devices Inc. It features Over-The-Top input capability with an ultrawide common-mode range extending from −VS − 0.1 V to −VS + 70 V. The device operates on supply voltages ranging from +3 V to +50 V and consumes 165 µA per channel. Key electrical specifications include a maximum input offset voltage of ±35 µV (B grade), a gain-bandwidth product of 1.05 MHz, and a slew rate of 0.85 V/µs. It offers high CMRR and PSRR, low noise density, and supports shutdown functionality.

Feature Summary

• Over-The-Top input architecture enabling operation beyond the positive supply rail
• Robust input protection against overdrive without phase reversal
• Low power consumption with dedicated shutdown control
• High precision DC performance with minimal offset voltage drift

Applications

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

Procurement Notes

Verify the specific B-grade temperature rating and package variant during procurement. Confirm that the ordering suffix corresponds to the required thermal and mechanical specifications. Ensure compatibility with the intended supply voltage range and load requirements before integration.

Selection Notes

Select this component for applications requiring high voltage tolerance and precision at low power. The dual configuration suits space-constrained designs needing two channels. Consider the MSOP package for compact PCB layouts while ensuring adequate thermal management for the operating environment.

Part Context

This part belongs to the ADA4098 family of robust, precision op amps. It shares core specifications with the single-channel ADA4098-1 but provides two independent channels in a dual package format. The family is designed for demanding industrial and automotive-like environments requiring high reliability.

Replacement Considerations

ADA4098-2ARMZ

FAQ

What is the maximum differential input voltage the ADA4098-2 can withstand?

The absolute maximum ratings specify a differential input voltage of ±80 V.

How does the input bias current behave in the Over-The-Top region?

When the common-mode input exceeds +VS − 1.25 V, the input bias current increases to approximately 8 µA due to the activation of the common base input pair.