MAX4375FEUB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Current Sense Amplifier
• Characteristics: High precision, low offset voltage, small package size
• Package: µMAX® (8-pin microMAX)
• Essence: The MAX4375FEUB is a current sense amplifier designed for accurate measurement of small currents in various applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -0.1V to +28V
• Quiescent Current: 50µA (typical)
• Gain Bandwidth Product: 500kHz (typical)
• Offset Voltage: ±100µV (maximum)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MAX4375FEUB has the following pin configuration:

```

---

| | --| IN+ OUT |-- Pin 1: IN+ (Non-Inverting Input) --| IN- GND |-- Pin 2: IN- (Inverting Input) / GND --| REF VCC |-- Pin 3: REF (Reference Voltage Input) / VCC (Supply Voltage) --| SET NC |-- Pin 4: SET (Gain Setting Pin) / NC (No Connection) --| NC NC |-- Pin 5: NC (No Connection) --| NC NC |-- Pin 6: NC (No Connection) --| NC NC |-- Pin 7: NC (No Connection) --| NC OUT |-- Pin 8: OUT (Amplifier Output) |___________| ```

Functional Features

• High accuracy current sensing
• Low offset voltage for precise measurements
• Wide input common-mode voltage range
• Small package size for space-constrained applications
• Low quiescent current for power efficiency

Advantages and Disadvantages

Advantages

• Accurate measurement of small currents
• Wide operating temperature range
• Low power consumption
• Compact package size

Disadvantages

• Limited gain bandwidth product compared to some alternatives
• Noisy output at high frequencies

Working Principles

The MAX4375FEUB is based on a differential amplifier architecture. It amplifies the voltage difference between the non-inverting (IN+) and inverting (IN-) inputs, allowing accurate measurement of small currents. The gain can be set using the SET pin, providing flexibility in different applications.

Detailed Application Field Plans

The MAX4375FEUB is suitable for various applications that require precise current sensing. Some potential application fields include:

1. Battery monitoring systems
2. Power management circuits
3. Motor control systems
4. Current monitoring in industrial equipment
5. Overcurrent protection circuits

Detailed and Complete Alternative Models

1. INA219: A high-side current shunt and power monitor with I2C interface.
2. LTC6101: A precision high-side current sense amplifier with adjustable gain.
3. AD8210: A high-voltage, bidirectional current shunt monitor.

These alternative models offer similar functionality to the MAX4375FEUB and can be considered based on specific requirements and design constraints.

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