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MAX44284WAWT+T

ADIMAX44284WAWT+T

Analog Devices Inc./Maxim Integrated
Current Sense Amplifier 1 Circuit 6-WLP (0.85x1.25)
Active8,973 in stock
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Overview

The MAX44284WAWT+T is a high-precision, ultra-low-power current sense amplifier designed for monitoring current in power-sensitive systems. It operates from a supply voltage as low as 1.7V while maintaining an extremely low input offset voltage of 10uV, making it ideal for high-side current sensing with minimal error. Its 21uA supply current is optimized for battery-powered applications where power efficiency is critical.

Why Choose This Part

This amplifier offers an exceptional balance of precision and power, featuring a 10uV offset voltage that allows for the use of very small shunt resistors to reduce power dissipation. The 1.7V to 5.5V supply range ensures compatibility with modern low-voltage rails, and its sub-25uA current consumption extends battery life in always-on monitoring circuits.

Applications

Battery Power Monitoring
Ideal for mobile devices and portable electronics to monitor discharge rates and state-of-charge with minimal power drain.
Precision Sensor Interface
Utilized in industrial transmitters where high accuracy and low offset are required for 4-20mA loop monitoring.
Energy Harvesting Systems
Detects micro-amp currents in low-energy environments thanks to the 2nA input bias current and ultra-low supply requirements.
Power Management Modules
Provides real-time current feedback for DC-DC converters to implement overcurrent protection and efficiency tracking.

Key Specifications

Mounting Type Surface Mount
-3db Bandwidth 1 kHz
Amplifier Type Current Sense
Package / Case 6-WFBGA, WLBGA
Current - Supply 21uA
Number of Circuits 1
Current - Input Bias 2 nA
Operating Temperature -40degC ~ 125degC
Voltage - Input Offset 10 uV
Supplier Device Package 6-WLP (0.85x1.25)
Voltage - Supply Span (Max) 5.5 V
Voltage - Supply Span (Min) 1.7 V

Getting Started

To evaluate this part, use the MAX44284EVKIT evaluation board which allows for easy connection to external shunt resistors and load circuits. Ensure that the 6-WLP package layout follows manufacturer guidelines for thermal management and PCB routing to maintain the 10uV offset accuracy. Since this version (W) has a 1 kHz bandwidth, it is best suited for stable DC measurements rather than high-speed transient analysis.

Part of MAX Current Sense Amplifiers family » MAX44284

MAX44284 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number -3db Bandwidth Package Voltage - Input Offset Stock
MAX44284WAWT+T (this part) 1 k WFBGA-6 10 uV 8,973
MAX44284HAUT+T 1.8 k 6-23 2 uV 6,566
MAX44284FAWT+T 3 k WFBGA-6 2 uV 17,536
MAX44284HAWT+T 1.8 k WFBGA-6 2 uV 15,957
MAX44284EAUT+T 400 Hz 6-23 15 uV 5,140