MAX4081SASA+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX4081SASA+ belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for current sensing and monitoring applications.

Characteristics

• The MAX4081SASA+ is a high-side current-sense amplifier.
• It operates over a wide voltage range, making it suitable for various power supply systems.
• This IC offers high accuracy and precision in current measurement.
• It has a low offset voltage, ensuring accurate current sensing even at low levels.
• The device is designed to provide excellent linearity and stability.

Package and Quantity

The MAX4081SASA+ is available in a small surface-mount package (SOP) with 8 pins. It is typically sold in reels containing a quantity of 250 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -0.1V to +28V
• Output Voltage Swing: 0V to VCC - 1.2V
• Gain Bandwidth Product: 500kHz
• Quiescent Current: 50µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MAX4081SASA+ features the following pin configuration:

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| | --| IN+ OUT |-- Pin 1: IN+ (Non-Inverting Input) --| IN- GND |-- Pin 2: IN- (Inverting Input) --| REF VCC |-- Pin 3: REF (Reference Voltage) --| VOUT NC |-- Pin 4: VOUT (Output Voltage) --| GAIN NC |-- Pin 5: GAIN (Gain Setting) --| GND NC |-- Pin 6: GND (Ground) --| VCC NC |-- Pin 7: VCC (Supply Voltage) --| NC NC |-- Pin 8: Not Connected |___________|

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Functional Features

• The MAX4081SASA+ provides a high-side current-sensing solution, enabling accurate measurement of current flowing through a load.
• It offers a wide input common-mode voltage range, allowing it to be used in various applications.
• The device has a built-in gain-setting pin, providing flexibility in selecting the desired gain for different current ranges.
• It features low quiescent current, making it suitable for power-sensitive applications.
• The IC incorporates internal protection features such as overvoltage and reverse-voltage protection.

Advantages and Disadvantages

Advantages: - High accuracy and precision in current sensing. - Wide operating voltage range. - Excellent linearity and stability. - Built-in protection features.

Disadvantages: - Limited output voltage swing. - Requires external components for proper operation.

Working Principles

The MAX4081SASA+ operates based on the principle of measuring the voltage drop across a sense resistor connected in series with the load. This voltage drop is amplified by the IC and converted into an output voltage proportional to the current flowing through the load. By accurately measuring this output voltage, the current can be determined.

Detailed Application Field Plans

The MAX4081SASA+ finds applications in various fields, including: 1. Power management systems 2. Battery monitoring and charging circuits 3. Motor control systems 4. Overcurrent protection circuits 5. Industrial automation

Detailed Alternative Models

Other alternative models that provide similar functionality to the MAX4081SASA+ include: - INA219 - LTC6101 - AD8211 - ACS712

These alternative models offer comparable features and can be considered as substitutes for the MAX4081SASA+ in specific applications.

In conclusion, the MAX4081SASA+ is a high-side current-sense amplifier that offers high accuracy, wide operating voltage range, and excellent linearity. It finds applications in various fields such as power management, battery monitoring, and motor control systems. While it has some limitations, there are alternative models available to suit specific requirements.