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規格
| 屬性 | 價值 |
| Package / Case | Tube |
| Part Status | Active |
| Amplifier Type | Current Sense |
| Number of Circuits | 1 |
| Slew Rate | 0.2V/µs |
| Gain Bandwidth Product | 50 kHz |
| Current - Input Bias | 28 µA |
| Supply Current | 200µA |
| Voltage - Supply Span(Min) | 2.7 V |
| Voltage - Supply Span(Max) | 36 V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
概述
Description
The INA250A3PW is a high-precision, integrated current sensing solution from Texas Instruments. It combines a precision, zero-drift operational amplifier with a precision, 2 mΩ shunt resistor in a single package. This design allows for accurate measurement of both current and voltage, making it suitable for various applications such as battery management, power supplies, and industrial equipment monitoring.
The device can measure bidirectional currents, providing a wide common-mode voltage range from 0V to 36V. The INA250A3PW offers an output voltage proportional to the sensed current with a fixed gain of 500 mV/A, enabling easy interfacing with analog or digital converters for further processing or monitoring.
Designed for ease of use, the INA250A3PW features a small SOIC-16 package, making it ideal for space-constrained applications. Its high accuracy and low offset voltage ensure minimal error across a wide temperature range, enhancing its reliability in various environmental conditions. Overall, the INA250A3PW is a robust solution for integrating current sensing into electronic systems.
The device can measure bidirectional currents, providing a wide common-mode voltage range from 0V to 36V. The INA250A3PW offers an output voltage proportional to the sensed current with a fixed gain of 500 mV/A, enabling easy interfacing with analog or digital converters for further processing or monitoring.
Designed for ease of use, the INA250A3PW features a small SOIC-16 package, making it ideal for space-constrained applications. Its high accuracy and low offset voltage ensure minimal error across a wide temperature range, enhancing its reliability in various environmental conditions. Overall, the INA250A3PW is a robust solution for integrating current sensing into electronic systems.
Equivalent
The INA250A3PW is a current-sensing amplifier with an integrated shunt resistor. Equivalent products include:
1. INA250A4: Similar functionality with different gain.
2. INA226: Offers digital output with I2C interface.
3. MAX44284: Features integrated shunt and analog output.
4. LTC4151: Provides high-side current and voltage sensing with I2C.
5. AD8418A: High common-mode voltage current sense amplifier.
Ensure to check the specific electrical characteristics and package compatibility when selecting alternatives.
1. INA250A4: Similar functionality with different gain.
2. INA226: Offers digital output with I2C interface.
3. MAX44284: Features integrated shunt and analog output.
4. LTC4151: Provides high-side current and voltage sensing with I2C.
5. AD8418A: High common-mode voltage current sense amplifier.
Ensure to check the specific electrical characteristics and package compatibility when selecting alternatives.
Features
The INA250A3PW is a precision integrated current sense amplifier with a built-in precision shunt resistor. It offers high accuracy and is designed for use in various current sensing applications. Key features include:
1. Integrated Shunt Resistor: The device includes a 2 mΩ precision shunt resistor, reducing board space and simplifying design.
2. Wide Common-Mode Range: It operates over a wide common-mode voltage range of –0.1 V to +36 V.
3. High Accuracy: The device provides low offset voltage and drift, ensuring high measurement accuracy.
4. Gain Options: It offers several gain options, with the A3 variant having a gain of 200 mV/A.
5. Low Power Consumption: The INA250A3PW is designed for low power usage, making it suitable for battery-powered applications.
6. Temperature Range: It functions effectively over an extended temperature range from –40°C to +125°C.
7. Small Package: Available in a TSSOP-16 package, it aids in compact designs.
8. Current Measurement Capability: It can handle continuous currents up to 15 A.
These features make the INA250A3PW suitable for various applications, including motor control, power management, and battery monitoring.
1. Integrated Shunt Resistor: The device includes a 2 mΩ precision shunt resistor, reducing board space and simplifying design.
2. Wide Common-Mode Range: It operates over a wide common-mode voltage range of –0.1 V to +36 V.
3. High Accuracy: The device provides low offset voltage and drift, ensuring high measurement accuracy.
4. Gain Options: It offers several gain options, with the A3 variant having a gain of 200 mV/A.
5. Low Power Consumption: The INA250A3PW is designed for low power usage, making it suitable for battery-powered applications.
6. Temperature Range: It functions effectively over an extended temperature range from –40°C to +125°C.
7. Small Package: Available in a TSSOP-16 package, it aids in compact designs.
8. Current Measurement Capability: It can handle continuous currents up to 15 A.
These features make the INA250A3PW suitable for various applications, including motor control, power management, and battery monitoring.
Pinout
The INA250A3PW is a current-sensing amplifier with an onboard precision shunt resistor, designed by Texas Instruments. It is part of the INA250 series, which integrates a precision, zero-drift current-sense amplifier with a precision 2 mΩ or 0.1% shunt resistor in a single package. The device comes in a TSSOP-16 package, meaning it has 16 pins.
The primary function of the INA250A3PW is to measure current through the shunt resistor and provide a voltage output that is proportional to the current flow. This makes it ideal for applications requiring precise current measurements, such as in power management, battery charging, and motor control systems.
The specific gain configuration for the INA250A3PW model offers a gain of 200 mV/A, making it suitable for various current-sensing applications where high accuracy and stability are required.
The primary function of the INA250A3PW is to measure current through the shunt resistor and provide a voltage output that is proportional to the current flow. This makes it ideal for applications requiring precise current measurements, such as in power management, battery charging, and motor control systems.
The specific gain configuration for the INA250A3PW model offers a gain of 200 mV/A, making it suitable for various current-sensing applications where high accuracy and stability are required.
Manufacturer
The INA250A3PW is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and technology solutions. Their products include analog chips, embedded processors, and other semiconductor devices used in various applications such as consumer electronics, automotive systems, industrial equipment, and communication technologies. Texas Instruments is known for its innovation and significant contributions to the electronics industry.
Application
The INA250A3PW is a current sense amplifier with an integrated precision shunt resistor, commonly used in various applications. Key application areas include:
1. Battery Management Systems: Monitoring battery charge and discharge currents.
2. Power Management: Over-current protection and power monitoring in power supplies.
3. Industrial Automation: Current sensing for motor control and equipment monitoring.
4. Consumer Electronics: Power and current monitoring in devices like laptops and smartphones.
5. Automotive Systems: Monitoring current in electric and hybrid vehicle systems.
6. Renewable Energy: Current monitoring in solar inverters and energy storage systems.
Its accuracy and integration make it suitable for precision current measurement in compact spaces.
1. Battery Management Systems: Monitoring battery charge and discharge currents.
2. Power Management: Over-current protection and power monitoring in power supplies.
3. Industrial Automation: Current sensing for motor control and equipment monitoring.
4. Consumer Electronics: Power and current monitoring in devices like laptops and smartphones.
5. Automotive Systems: Monitoring current in electric and hybrid vehicle systems.
6. Renewable Energy: Current monitoring in solar inverters and energy storage systems.
Its accuracy and integration make it suitable for precision current measurement in compact spaces.
Package
The INA250A3PW is packaged in a TSSOP (Thin Shrink Small Outline Package), specifically a 16-pin TSSOP. This type of package is designed for surface-mount technology, offering a compact form suitable for high-density circuit designs.
