INA250A3PW

Product Overview

Category: Integrated Circuit (IC)

Use: The INA250A3PW is a precision current-sensing IC designed for use in various applications that require accurate current measurements. It is commonly used in power management systems, battery chargers, motor control circuits, and other electronic devices.

Characteristics: - High accuracy current sensing - Wide input voltage range - Low offset voltage and drift - High common-mode rejection ratio - Small package size

Package: The INA250A3PW is available in a small outline package (SOP) with three pins.

Essence: The essence of the INA250A3PW lies in its ability to accurately measure current in a wide range of applications, providing precise feedback for efficient power management and control.

Packaging/Quantity: The INA250A3PW is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -0.1V to V+ + 0.1V
• Operating Temperature Range: -40°C to +125°C
• Gain Error: ±0.5%
• Offset Voltage: ±100µV
• Bandwidth: 200kHz
• Quiescent Current: 60µA

Pin Configuration

The INA250A3PW has three pins:

1. V+
2. OUT
3. GND

Functional Features

• High-precision current sensing
• Wide input voltage range allows for versatile applications
• Low offset voltage and drift ensure accurate measurements
• High common-mode rejection ratio minimizes noise interference
• Small package size enables space-efficient designs

Advantages and Disadvantages

Advantages: - Accurate current sensing - Wide input voltage range - Low offset voltage and drift - High common-mode rejection ratio - Compact package size

Disadvantages: - Limited bandwidth (200kHz) - Relatively higher quiescent current (60µA)

Working Principles

The INA250A3PW utilizes a precision amplifier and a shunt resistor to measure the voltage drop across the shunt resistor, which is proportional to the current flowing through it. The amplified voltage output is then provided at the OUT pin for further processing.

Detailed Application Field Plans

The INA250A3PW can be applied in various fields, including but not limited to:

1. Power management systems: Accurate current measurement for efficient power distribution and control.
2. Battery chargers: Precise monitoring of charging currents for optimal battery performance and safety.
3. Motor control circuits: Current sensing for precise motor control and protection.
4. Energy monitoring systems: Accurate current measurements for energy consumption analysis and optimization.
5. Industrial automation: Current sensing in control systems for process monitoring and fault detection.

Detailed and Complete Alternative Models

1. INA250A1PW: Single-channel version with similar specifications.
2. INA250A2PW: Dual-channel version with similar specifications.
3. INA250A4PW: Quad-channel version with similar specifications.

These alternative models provide flexibility in choosing the appropriate number of channels based on specific application requirements.

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