INA240A4D

Product Overview

Category: Integrated Circuit (IC)

Use: The INA240A4D is a high-precision, low-drift, bidirectional current-sensing amplifier. It is designed for use in applications that require accurate measurement of both positive and negative currents.

Characteristics: - High precision: The INA240A4D offers exceptional accuracy with a maximum offset voltage of 50µV and a maximum gain error of 0.1%. - Low drift: It features a low temperature drift of 0.5µV/°C, ensuring stable performance over a wide range of operating temperatures. - Bidirectional sensing: The device can accurately measure both positive and negative currents, making it suitable for applications such as battery monitoring and motor control. - Wide supply voltage range: The INA240A4D operates from a single supply voltage ranging from 2.7V to 5.5V, providing flexibility in various power supply configurations. - Small package: It comes in a compact SOIC-14 package, allowing for space-efficient integration into circuit designs.

Essence: The INA240A4D is an essential component for precise current measurement in applications requiring bidirectional current sensing.

Packaging/Quantity: The INA240A4D is available in a standard SOIC-14 package. It is typically sold in reels containing 250 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -0.3V to V+ + 0.3V
• Offset Voltage: ±50µV (maximum)
• Gain Error: 0.1% (maximum)
• Temperature Drift: 0.5µV/°C (maximum)
• Bandwidth: 350kHz (typical)
• Quiescent Current: 350µA (typical)

Pin Configuration

The INA240A4D features a standard SOIC-14 pin configuration:

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| | | 1 2 | | | | 3 4 | | | | 5 6 | | | | 7 8 | | | | 9 10 | |___________| ```

Functional Features

• High accuracy current sensing: The INA240A4D provides precise measurement of bidirectional currents with low offset voltage and gain error.
• Wide common-mode voltage range: It allows for flexible integration into various circuit configurations.
• Low power consumption: The device operates with low quiescent current, minimizing power consumption in battery-powered applications.
• Fast response time: With a bandwidth of 350kHz, the INA240A4D can accurately capture fast-changing current signals.

Advantages and Disadvantages

Advantages: - High precision and accuracy - Bidirectional current sensing capability - Wide supply voltage range - Compact package size - Low power consumption

Disadvantages: - Limited bandwidth compared to some specialized current sensing amplifiers - Not suitable for high-frequency applications

Working Principles

The INA240A4D utilizes a differential amplifier architecture to measure the voltage drop across a shunt resistor connected in series with the current path. By amplifying this voltage, it provides an accurate representation of the current flowing through the shunt resistor. The bidirectional current sensing capability is achieved by using a symmetrical design that allows for both positive and negative current measurements.

Application Field Plans

The INA240A4D finds application in various fields, including but not limited to: - Battery monitoring systems - Motor control and drive systems - Power management in industrial equipment - Current sensing in automotive applications - Solar power systems

Alternative Models

For alternative options with similar functionality, the following models can be considered: - INA240A2D: Dual-channel version of the INA240A4D - INA240A3D: Triple-channel version of the INA240A4D - INA240A5D: Quad-channel version of the INA240A4D

These alternatives provide flexibility in terms of the number of channels required for current sensing applications.

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