INA205AIDGST

Product Overview

Category: Integrated Circuit (IC)

Use: The INA205AIDGST is a high-side current shunt monitor IC that accurately measures the voltage drop across a current-sensing resistor to determine the current flowing through it. It is commonly used in various applications where precise current monitoring is required, such as power management systems, battery chargers, motor control, and industrial automation.

Characteristics: - High accuracy current sensing - Wide common-mode voltage range - Low offset voltage and drift - High bandwidth for fast response - Small package size for space-constrained designs

Package: The INA205AIDGST is available in a small SOT-23-8 package, which provides compactness and ease of integration into different circuit designs.

Essence: The essence of the INA205AIDGST lies in its ability to accurately measure current by monitoring the voltage drop across a shunt resistor, enabling precise current control and monitoring in various electronic systems.

Packaging/Quantity: The INA205AIDGST is typically sold in reels containing 3000 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 26V
• Common-Mode Voltage Range: -0.3V to +26V
• Input Offset Voltage: ±150µV (maximum)
• Gain Error: ±0.5% (maximum)
• Bandwidth: 500kHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA205AIDGST has the following pin configuration:

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| | --| IN+ OUT |-- --| IN- REF |-- --| V+ GND |-- |___________| ```

• IN+: Non-inverting input terminal for measuring the voltage drop across the shunt resistor.
• IN-: Inverting input terminal for measuring the voltage drop across the shunt resistor.
• V+: Positive supply voltage terminal.
• GND: Ground reference terminal.
• OUT: Output terminal providing the amplified and filtered current measurement signal.
• REF: Reference voltage terminal for setting the common-mode voltage range.

Functional Features

1. Accurate Current Sensing: The INA205AIDGST provides high accuracy in measuring current by accurately sensing the voltage drop across a shunt resistor.
2. Wide Common-Mode Voltage Range: It can operate with a wide range of common-mode voltages, allowing flexibility in various applications.
3. Low Offset Voltage and Drift: The IC has low offset voltage and drift, ensuring precise current measurements over time and temperature variations.
4. High Bandwidth: With a bandwidth of 500kHz, it can capture fast-changing current signals accurately.
5. Small Package Size: The compact SOT-23-8 package enables easy integration into space-constrained designs.

Advantages and Disadvantages

Advantages: - High accuracy current sensing - Wide common-mode voltage range - Low offset voltage and drift - Compact package size - Fast response with high bandwidth

Disadvantages: - Limited maximum supply voltage range (up to 26V) - Requires an external shunt resistor for current measurement

Working Principles

The INA205AIDGST operates based on the principle of measuring the voltage drop across a shunt resistor. It amplifies this voltage drop and provides an output proportional to the current flowing through the shunt resistor. By accurately measuring the voltage drop, it enables precise current monitoring and control in various electronic systems.

Application Field Plans

The INA205AIDGST finds applications in a wide range of fields, including:

1. Power Management Systems: It is used for accurate current monitoring in power supplies, DC-DC converters, and voltage regulators.
2. Battery Chargers: The IC enables precise current measurement and control in battery charging circuits, ensuring optimal charging performance.
3. Motor Control: It is employed in motor control systems to monitor the current flowing through the motor windings, enabling efficient and safe operation.
4. Industrial Automation: The INA205AIDGST is utilized in industrial automation systems for current monitoring in motor drives, robotics, and process control.

Alternative Models

1. INA206AIDGST: Similar to the INA205AIDGST but with a higher bandwidth of 1MHz.
2. INA207AIDGST: Offers similar features as the INA205AIDGST but with a lower offset voltage and drift.
3. INA208AIDGST: Provides a wider supply voltage range and higher gain accuracy compared to the INA205AIDGST.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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