Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| 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 |
Tổng quan
Description
The INA250A1PWR is a highly integrated current sensing device designed by Texas Instruments. It combines a precision, bi-directional current shunt monitor with a built-in, precision 2 mΩ resistive shunt. This component is ideal for applications requiring accurate current measurements, such as power management and battery monitoring systems. It operates over a wide common-mode voltage range, from -0.3 V to +36 V, making it versatile for various applications.
The INA250A1PWR offers an analog output that is proportional to the current passing through the shunt resistor, with a gain of 200 mV/A, enhancing measurement accuracy. It is part of the INA250 series, which provides different gain options to suit specific system needs. With a wide temperature range from -40°C to +125°C, it is suitable for industrial and automotive environments.
The device is housed in a TSSOP-16 package, which is compact and easy to integrate into circuit designs. Its integration of a shunt resistor simplifies design, reduces board space, and improves reliability by minimizing the number of external components necessary for current sensing applications.
The INA250A1PWR offers an analog output that is proportional to the current passing through the shunt resistor, with a gain of 200 mV/A, enhancing measurement accuracy. It is part of the INA250 series, which provides different gain options to suit specific system needs. With a wide temperature range from -40°C to +125°C, it is suitable for industrial and automotive environments.
The device is housed in a TSSOP-16 package, which is compact and easy to integrate into circuit designs. Its integration of a shunt resistor simplifies design, reduces board space, and improves reliability by minimizing the number of external components necessary for current sensing applications.
Equivalent
The INA250A1PWR is a current sense amplifier with an integrated shunt resistor. Equivalent products include:
1. INA250A2PWR - Similar device with a different gain setting.
2. INA253 - Offers similar functionality with higher voltage ranges.
3. INA190 - A potential alternative with lower power consumption.
4. MAX44284 - High-precision, high-side current sense amplifier from Maxim Integrated.
These alternatives vary in specifications like gain, accuracy, and available features, so selection depends on specific application requirements.
1. INA250A2PWR - Similar device with a different gain setting.
2. INA253 - Offers similar functionality with higher voltage ranges.
3. INA190 - A potential alternative with lower power consumption.
4. MAX44284 - High-precision, high-side current sense amplifier from Maxim Integrated.
These alternatives vary in specifications like gain, accuracy, and available features, so selection depends on specific application requirements.
Features
The INA250A1PWR is a highly integrated current sensing solution featuring a precision, zero-drift, bi-directional current-shunt monitor. It has the following key features:
1. Integrated Shunt Resistor: The device includes a 2 mΩ precision shunt resistor, enabling accurate current measurement with minimal board space.
2. Wide Common-Mode Voltage Range: It operates over a wide common-mode voltage range from 0V to 36V, making it suitable for high-side and low-side current sensing in multiple applications.
3. High Accuracy and Stability: The INA250A1PWR provides high accuracy with low offset voltage, low drift, and a precision gain of 200 mV/A.
4. Bi-directional Current Sensing: This feature allows for measuring current in both directions, which is beneficial for applications involving charging and discharging processes.
5. Temperature Range: It operates across a wide temperature range from -40°C to 125°C, suitable for industrial environments.
6. Low Quiescent Current: It consumes low quiescent current, enhancing efficiency in battery-powered applications.
These features make the INA250A1PWR ideal for power management, battery management, and other applications requiring precise current measurement.
1. Integrated Shunt Resistor: The device includes a 2 mΩ precision shunt resistor, enabling accurate current measurement with minimal board space.
2. Wide Common-Mode Voltage Range: It operates over a wide common-mode voltage range from 0V to 36V, making it suitable for high-side and low-side current sensing in multiple applications.
3. High Accuracy and Stability: The INA250A1PWR provides high accuracy with low offset voltage, low drift, and a precision gain of 200 mV/A.
4. Bi-directional Current Sensing: This feature allows for measuring current in both directions, which is beneficial for applications involving charging and discharging processes.
5. Temperature Range: It operates across a wide temperature range from -40°C to 125°C, suitable for industrial environments.
6. Low Quiescent Current: It consumes low quiescent current, enhancing efficiency in battery-powered applications.
These features make the INA250A1PWR ideal for power management, battery management, and other applications requiring precise current measurement.
Pinout
The INA250A1PWR is an integrated current sensing device from Texas Instruments. It features a high-precision, zero-drift operational amplifier combined with an internal, low-drift, precision shunt resistor. This allows it to measure current accurately across a wide range of applications.
The device comes in a 16-pin TSSOP (Thin Shrink Small Outline Package). The pin configuration and functions are as follows:
1. Pins 1, 16 (IN+): Positive input connection for the current sensing resistor.
2. Pins 2, 15 (IN-): Negative input connection for the current sensing resistor.
3. Pins 3, 14 (V- or GND): Ground pins, connected to the negative supply.
4. Pin 4 (REF1): Reference input pin, can be used to set the zero current output voltage.
5. Pin 5 (REF2): Reference input pin, used in conjunction with REF1 for setting reference voltage.
6. Pin 6 (OUT): Output pin that provides the amplified and conditioned voltage representing the sensed current.
7. Pin 7 (V+ or VS): Positive supply voltage input.
8. Pins 8-13 (NC): No connection, often used for mechanical stability.
This design simplifies current measurement by providing a highly integrated solution, reducing the need for external components.
The device comes in a 16-pin TSSOP (Thin Shrink Small Outline Package). The pin configuration and functions are as follows:
1. Pins 1, 16 (IN+): Positive input connection for the current sensing resistor.
2. Pins 2, 15 (IN-): Negative input connection for the current sensing resistor.
3. Pins 3, 14 (V- or GND): Ground pins, connected to the negative supply.
4. Pin 4 (REF1): Reference input pin, can be used to set the zero current output voltage.
5. Pin 5 (REF2): Reference input pin, used in conjunction with REF1 for setting reference voltage.
6. Pin 6 (OUT): Output pin that provides the amplified and conditioned voltage representing the sensed current.
7. Pin 7 (V+ or VS): Positive supply voltage input.
8. Pins 8-13 (NC): No connection, often used for mechanical stability.
This design simplifies current measurement by providing a highly integrated solution, reducing the need for external components.
Manufacturer
The INA250A1PWR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic products and components. Founded in 1930 and headquartered in Dallas, Texas, TI is known for its innovation in the fields of analog and digital signal processing, embedded processors, and various other semiconductor devices used in both consumer and industrial electronics. The company serves diverse markets including automotive, industrial, personal electronics, communications equipment, and enterprise systems. Texas Instruments is a leading player in the electronics industry, focusing on creating technology that enables efficient power management and advanced functionality in electronic systems.
Application
The INA250A1PWR is commonly used in various applications that require precise current sensing and power monitoring. Key areas include:
1. Power Supplies: Monitoring and protection in DC-DC converters and switching power supplies.
2. Battery Management: Managing charge and discharge cycles in battery-powered systems.
3. Motor Control: Ensuring accurate current measurement in motor drives and motor control applications.
4. Industrial Automation: Used in process control and automated systems for current monitoring.
5. Telecommunications: Power management in networking equipment and telecommunications infrastructure.
6. Consumer Electronics: Enhancements in smart appliances and portable devices for energy efficiency.
These applications benefit from the INA250A1PWR's ability to provide high accuracy and integration with other electronic systems.
1. Power Supplies: Monitoring and protection in DC-DC converters and switching power supplies.
2. Battery Management: Managing charge and discharge cycles in battery-powered systems.
3. Motor Control: Ensuring accurate current measurement in motor drives and motor control applications.
4. Industrial Automation: Used in process control and automated systems for current monitoring.
5. Telecommunications: Power management in networking equipment and telecommunications infrastructure.
6. Consumer Electronics: Enhancements in smart appliances and portable devices for energy efficiency.
These applications benefit from the INA250A1PWR's ability to provide high accuracy and integration with other electronic systems.
Package
The INA250A1PWR is a current sense amplifier with an integrated shunt resistor from Texas Instruments. It comes in a TSSOP (Thin Shrink Small Outline Package) with 16 pins, specifically designed for precision current measurements.
