ADA4097-2BRMZ

Overview

The ADA4097-2BRMZ 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 + 70 V and supports power supply voltages up to 50 V. The device offers low quiescent current of 32.5 µA per channel and includes a shutdown feature for reduced power consumption. Key electrical specifications include a gain-bandwidth product of 130 kHz, a maximum input offset voltage of ±60 µV, and a typical slew rate of 0.1 V/µs. It provides high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR), ensuring robust performance in industrial sensor conditioning and battery monitoring applications.

Feature Summary

• Over-The-Top operation allows inputs to function beyond the positive supply rail up to 70 V without phase reversal.
• Robust design with high electrostatic discharge tolerance and large signal voltage gain exceeding 120 dB.
• Low power architecture featuring a dedicated shutdown pin to minimize standby current consumption.

Applications

• Industrial sensor conditioning
• Supply current sensing
• Battery and power supply monitoring
• Front-end amplifiers in abusive environments

Procurement Notes

Verify the specific package type associated with the BRMZ suffix against official documentation before procurement. Confirm that the B-grade offset voltage specifications align with circuit requirements. Ensure ESD precautions are followed during handling due to the sensitivity of the input stages. Cross-reference the ordering guide to confirm availability and lead times through authorized distributors.

Selection Notes

Select this component when high-voltage common-mode signals require amplification within standard single-supply systems. The dual-channel configuration is suitable for differential sensing or multi-sensor interfaces. Consider the thermal characteristics if operating near the upper temperature limits. Verify that the 130 kHz bandwidth meets the dynamic response needs of the target application.

Part Context

This part belongs to the ADA4097 family of robust, precision op amps designed for over-the-top operation. It complements the single-channel ADA4097-1 and other package variants like LFCSP. The series targets applications requiring high accuracy and reliability in harsh electrical environments, such as automotive and industrial control systems.

Replacement Considerations

Check for direct pin-compatible alternatives within the same Analog Devices portfolio. Verify that substitute parts maintain similar Over-The-Top capabilities and offset voltage drift specifications. Ensure any replacement supports the required 50 V supply voltage and shutdown functionality.

FAQ

How does the Over-The-Top input stage function?

The device utilizes two input stages: a common emitter stage for normal operation and a common base stage that activates when the input voltage exceeds the positive supply rail, allowing measurement up to 70 V above ground.

What is the effect of the SHDN pin on operation?

Asserting the SHDN pin high places the amplifier in a low-power shutdown state, reducing supply current significantly. Deasserting it returns the amplifier to active mode with a specified response time.