INA204AID

Product Overview

Category: Integrated Circuit (IC)

Use: The INA204AID is a precision current-sensing amplifier that is primarily used for measuring and amplifying small differential voltage signals across a shunt resistor. It is commonly employed in applications where accurate current measurements are required, such as power monitoring, battery management systems, motor control, and industrial automation.

Characteristics: - High accuracy and precision - Low offset voltage and low drift - Wide common-mode voltage range - High common-mode rejection ratio - Low quiescent current consumption

Package: The INA204AID is available in a small outline integrated circuit (SOIC) package, which provides ease of integration into various electronic systems.

Essence: The essence of the INA204AID lies in its ability to accurately measure and amplify small differential voltage signals across a shunt resistor, enabling precise current measurements in a wide range of applications.

Packaging/Quantity: The INA204AID is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -0.3V to +26V
• Gain Bandwidth Product: 500kHz
• Quiescent Current: 60µA
• Offset Voltage: ±150µV
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA204AID has a total of 8 pins, which are assigned specific functions:

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

Functional Features

• High accuracy current sensing
• Differential voltage amplification
• Adjustable gain setting
• Wide operating voltage range
• Low power consumption
• High common-mode rejection ratio

Advantages and Disadvantages

Advantages: - High precision and accuracy in current measurements - Wide common-mode voltage range allows for versatile applications - Low quiescent current consumption helps conserve power - Small package size enables easy integration into electronic systems

Disadvantages: - Limited gain bandwidth product may restrict high-frequency applications - Requires external shunt resistor for current sensing

Working Principles

The INA204AID operates based on the principle of measuring the voltage drop across a shunt resistor to determine the current flowing through it. It amplifies the small differential voltage signal across the shunt resistor and provides an amplified output proportional to the current being measured. The gain of the amplifier can be adjusted using the SET pin, allowing for flexibility in different applications.

Detailed Application Field Plans

The INA204AID finds extensive use in various fields, including:

1. Power monitoring and management systems
2. Battery management systems
3. Motor control and drive systems
4. Industrial automation and robotics
5. Energy harvesting systems
6. Solar power systems
7. Electric vehicle charging stations
8. Current measurement in electronic test equipment

Detailed and Complete Alternative Models

1. INA219: Similar to the INA204AID, but with additional features such as integrated shunt resistor and I2C interface.
2. INA226: Offers higher precision and accuracy with integrated shunt resistor and I2C/SMBus interface.
3. INA240: Designed specifically for high-side current sensing applications with integrated shunt resistor and adjustable gain.

These alternative models provide similar functionality to the INA204AID but offer additional features or improved performance in certain aspects.

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