ADA4099-2BRMZ

Overview

The ADA4099-2BRMZ 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, enabling Over-The-Top operation independent of the positive supply rail. The device operates on a single or split power supply ranging from 3.15 V to 50 V. Key electrical characteristics include a gain-bandwidth product of 8 MHz, a slew rate of 5.5 V/µs, and a maximum input offset voltage of ±40 µV. It consumes 1.5 mA per channel in active mode and supports low-power shutdown with currents below 20 µA.

Feature Summary

• Over-The-Top input capability allows signal detection even when biased beyond the positive supply voltage
• Robust front-end design tolerates abusive environments with high differential input voltage tolerance
• Low noise performance suitable for detecting small signals within system noise floors
• Integrated low power shutdown function enables duty cycle optimization while maintaining performance

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 grade (B or H) and package suffix (BRMZ indicates MSOP-8) against the official Analog Devices ordering guide. Confirm that the required operating temperature range matches the selected grade specifications. Ensure ESD precautions are followed during handling as the device is sensitive to electrostatic discharge.

Selection Notes

Select this component when designing circuits requiring precise amplification of signals exceeding the positive supply rail. The dual-channel configuration is ideal for applications needing two isolated precision amplifiers in a compact surface-mount package. Consider the thermal resistance and power dissipation limits if operating at high supply voltages or driving heavy loads.

Part Context

This part belongs to the ADA4099 family of robust, precision op amps designed for harsh industrial conditions. The dual-channel variant provides two independent amplifiers in one package, sharing the same power supply and ground references. It complements the single-channel ADA4099-1 and other packages like SOIC and LFCSP within the same series.

Replacement Considerations

Direct substitutes include other parts from the ADA4099 family such as the ADA4099-2ARZ (SOIC package) or ADA4099-2BCPZ (LFCSP package), provided the pinout and package dimensions match the PCB layout. Verify that alternative components meet the specific Over-The-Top voltage requirements and precision specifications.