MAX4374HESD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Current Sense Amplifier
• Characteristics: High precision, low offset voltage, small package size
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: The MAX4374HESD is a current sense amplifier designed for accurate measurement of current 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 MAX4374HESD has the following pin configuration:

```

---

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

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

• High precision current sensing
• Wide input voltage range
• Compact package size
• Low power consumption

Disadvantages

• Limited gain bandwidth product
• Requires external gain setting resistor

Working Principles

The MAX4374HESD is a current sense amplifier that utilizes a differential input configuration to accurately measure current. It amplifies the voltage drop across a shunt resistor in series with the current path, allowing for precise current measurements. The gain of the amplifier can be set externally using a gain setting resistor.

Application Field Plans

The MAX4374HESD is suitable for various applications where accurate current measurement is required. Some potential application fields include:

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

Alternative Models

Here are some alternative models that offer similar functionality:

1. INA219 - Current Shunt Monitor with I2C Interface
2. LTC6101 - Precision High-Side Current Sense Amplifier
3. AD8210 - High Common-Mode Voltage Current Shunt Monitor

These alternatives provide different features and specifications, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the MAX4374HESD is a high-precision current sense amplifier designed for accurate current measurement in various applications. Its small package size, wide input voltage range, and low power consumption make it a versatile choice for current sensing needs. However, its limited gain bandwidth product and requirement for an external gain setting resistor should be considered when selecting this amplifier.