INA381A3IDSGT

Product Overview

Category: Integrated Circuit (IC)

Use: The INA381A3IDSGT is a high-side current sense amplifier designed for precision current measurement in various applications.

Characteristics: - High accuracy and precision - Wide input voltage range - Low offset voltage and low quiescent current - High common-mode rejection ratio (CMRR) - Small package size for space-constrained designs

Package: DSG (8-pin VSSOP)

Essence: The INA381A3IDSGT is an essential component for accurate current sensing and monitoring in electronic systems.

Packaging/Quantity: The INA381A3IDSGT is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -0.2V to +26V
• Quiescent Current: 60µA (typical)
• Gain Bandwidth Product: 500kHz (typical)
• Output Voltage Swing: 0V to Vcc - 1.2V
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA381A3IDSGT has the following pin configuration:

1. V+ (Positive Supply Voltage)
2. V- (Negative Supply Voltage)
3. OUT (Amplifier Output)
4. REF (Reference Voltage)
5. IN- (Inverting Input)
6. IN+ (Non-Inverting Input)
7. SET (Gain Setting)
8. GND (Ground)

Functional Features

• High-side current sensing: Allows precise measurement of current flowing through a load without interrupting the circuit.
• Wide input voltage range: Can handle a wide range of input voltages, making it suitable for various applications.
• Low offset voltage and low quiescent current: Ensures accurate and efficient current measurement with minimal power consumption.
• High common-mode rejection ratio (CMRR): Minimizes the impact of common-mode noise on the accuracy of current measurements.
• Small package size: Enables space-saving designs in compact electronic systems.

Advantages and Disadvantages

Advantages: - High accuracy and precision - Wide input voltage range - Low power consumption - Compact package size - Excellent common-mode rejection

Disadvantages: - Limited output voltage swing - Requires external gain-setting resistor

Working Principles

The INA381A3IDSGT operates based on the principle of amplifying the voltage drop across a shunt resistor connected in series with the load. By measuring this voltage drop, the amplifier accurately determines the current flowing through the load. The gain-setting resistor allows the user to adjust the amplification factor according to their specific requirements.

Detailed Application Field Plans

The INA381A3IDSGT finds applications in various fields, including but not limited to: 1. Power management systems 2. Battery monitoring and protection circuits 3. Motor control systems 4. Industrial automation 5. Solar energy systems 6. Automotive electronics 7. Telecommunications equipment

Detailed and Complete Alternative Models

1. INA180A3IDBVT
2. INA213AIDCKR
3. INA282AIDGKT
4. INA333AIDGKR
5. INA139NA/250
6. INA240AIDGKT
7. INA826AIDGKT
8. INA138NA/250

These alternative models offer similar functionality and can be considered as substitutes for the INA381A3IDSGT depending on specific application requirements.

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