The MAX4081FASA+ from Maxim Integrated is a high-side current-sense amplifier designed to monitor the current flowing through a shunt resistor placed in the high side of a power supply or in any other positive supply rail. This precision current-sense amplifier is ideal for a wide range of applications, including automotive, industrial, telecommunications, and consumer electronics.

Key Features

• Wide Supply Voltage Range: The device operates from a 4.5V to 76V single supply, making it suitable for many different voltage levels within electronic systems.
• High Accuracy: With a low input offset voltage and high gain accuracy, the MAX4081FASA+ provides precise current measurement.
• Adjustable Gain: The device comes with an adjustable gain set by external resistors, offering flexibility in various applications.
• Low Power Consumption: It features a quiescent current of only 85µA (typ), which is beneficial for power-sensitive designs.
• Wide Operating Temperature Range: The MAX4081FASA+ is specified for the -40°C to +125°C temperature range, making it reliable in harsh environments.
• Small Package: Available in an 8-pin SOIC package, it requires minimal space on a PCB.
• High-Side Measurement: By measuring the high side of the circuit, the MAX4081FASA+ allows for ground-referenced loads and eliminates the need for a negative power supply.

Applications

The versatility of the MAX4081FASA+ makes it suitable for various applications, including:

• Battery management systems
• Power management and monitoring
• Overcurrent protection
• Automotive systems
• Portable devices
• Telecommunications equipment

With its robust design and precise current sensing capabilities, the MAX4081FASA+ from Maxim Integrated is an excellent choice for designers looking to enhance the safety, efficiency, and reliability of their electronic systems.