ADM1191-2ARMZ-R7

Power Management - Specialized Overview

The ADM1191-2ARMZ-R7 is a dual-channel current sense amplifier manufactured by Analog Devices Inc. It features a wide common-mode input voltage range of -4 V to +80 V, allowing for high-side or low-side sensing in various power architectures. The device provides a unipolar output voltage referenced to ground, with a fixed gain of 20 V/V. Key electrical specifications include a maximum offset voltage of 50 µV and a maximum quiescent current of 350 µA per channel. It operates within an extended temperature range from -40 °C to +125 °C and is housed in a compact MSOP-10 package.

Power Management - Specialized Feature Summary

• Supports high-side and low-side current sensing with a wide common-mode voltage range extending up to 80 V
• Provides a unipolar output signal referenced to ground, simplifying interface with single-supply ADCs and microcontrollers
• Features precision performance with low offset voltage and low drift to ensure accurate measurement across the operating temperature range

Power Management - Specialized Applications

• Battery management systems in electric vehicles and portable electronics
• Industrial motor control and drive circuits
• Power supply overcurrent protection and load monitoring

Power Management - Specialized Procurement Notes

Verify the specific suffix R7 indicates reel packaging when ordering. Confirm that the -2 designation corresponds to the dual-channel variant required for your schematic. Ensure the MSOP-10 footprint matches your PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Power Management - Specialized Selection Notes

Select this component when a dual-channel solution is needed for precise current monitoring in high-voltage environments. The fixed 20 V/V gain is suitable for applications requiring significant signal amplification from small shunt voltages. Consider the thermal dissipation capabilities of the MSOP-10 package if operating near the upper temperature limits or under high continuous load conditions.

Power Management - Specialized Part Context

This part belongs to the ADM1191 family of current sense amplifiers designed for robust operation in harsh electrical environments. The series is characterized by its ability to handle large common-mode transients while maintaining accuracy. The ARMZ suffix typically denotes a lead-free and halogen-free compliant version of the standard ADM1191-2ARMZ device.

Power Management - Specialized Replacement Considerations

Direct replacements may include other dual-channel current sense amplifiers from Analog Devices with similar gain and voltage ranges. Verify pin compatibility and gain accuracy before substituting with parts from other manufacturers. Ensure the alternative device supports the required common-mode voltage range of 80 V.