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INA240A3DR
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規格
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| AmplifierType | Current Sense |
| NumberofCircuits | 1 |
| SlewRate | 2V/µs |
| -3dbBandwidth | 400 kHz |
| Current-InputBias | 90 µA |
| Voltage-InputOffset | 5 µV |
| Current-Supply | 1.8mA |
| Voltage-SupplySpan(Min) | 2.7 V |
| Voltage-SupplySpan(Max) | 5.5 V |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
概述
Description
The INA240A3DR is a precision, bidirectional current sense amplifier designed by Texas Instruments. It's part of the INA240 series, specifically tailored for enhanced performance in motor control applications. This device features an integrated, high-precision amplifier that accurately measures current across a resistor in high-side or low-side configurations.
Key specifications include a voltage supply range of 2.7V to 5.5V and an input common-mode voltage range from -4V to +80V, which allows for flexibility in various applications. It offers a fixed gain of 50 V/V (variant A3), ensuring consistent and reliable performance. The INA240A3DR also incorporates an enhanced PWM rejection feature, minimizing errors induced by switching transients commonly found in motor-driven systems.
The device is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) configuration, making it suitable for compact designs. Its low offset voltage, high precision, and robust design make it an ideal choice for demanding applications in automotive, industrial, and consumer electronics where precise current measurement is crucial.
Key specifications include a voltage supply range of 2.7V to 5.5V and an input common-mode voltage range from -4V to +80V, which allows for flexibility in various applications. It offers a fixed gain of 50 V/V (variant A3), ensuring consistent and reliable performance. The INA240A3DR also incorporates an enhanced PWM rejection feature, minimizing errors induced by switching transients commonly found in motor-driven systems.
The device is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) configuration, making it suitable for compact designs. Its low offset voltage, high precision, and robust design make it an ideal choice for demanding applications in automotive, industrial, and consumer electronics where precise current measurement is crucial.
Features
The INA240A3DR is a high-precision, bidirectional current sense amplifier from Texas Instruments, designed for accurate current measurement across a shunt resistor. Some key features include:
1. High Accuracy: It boasts a low offset voltage and drift, ensuring precise current measurements.
2. Wide Common-Mode Voltage Range: The device supports a common-mode voltage range from -4V to +80V, making it versatile for various applications.
3. High Bandwidth: It offers a bandwidth of 400 kHz, suitable for fast transient response.
4. Programmable Gain Options: The amplifier comes with a fixed gain of 200 V/V, providing flexibility in various applications.
5. Enhanced PWM Rejection: Optimized for use in environments with pulse-width modulation (PWM) signals, the INA240A3DR minimizes errors from common-mode voltage transients.
6. Bidirectional Current Sensing: It can measure current in both directions, enhancing its applicability.
7. Temperature Range: The device operates over an extended temperature range from -40°C to +125°C.
8. Package: Offered in an 8-pin SOIC package, facilitating straightforward integration into circuit designs.
These features make the INA240A3DR ideal for automotive, industrial, and consumer electronics applications where accurate current sensing is crucial.
1. High Accuracy: It boasts a low offset voltage and drift, ensuring precise current measurements.
2. Wide Common-Mode Voltage Range: The device supports a common-mode voltage range from -4V to +80V, making it versatile for various applications.
3. High Bandwidth: It offers a bandwidth of 400 kHz, suitable for fast transient response.
4. Programmable Gain Options: The amplifier comes with a fixed gain of 200 V/V, providing flexibility in various applications.
5. Enhanced PWM Rejection: Optimized for use in environments with pulse-width modulation (PWM) signals, the INA240A3DR minimizes errors from common-mode voltage transients.
6. Bidirectional Current Sensing: It can measure current in both directions, enhancing its applicability.
7. Temperature Range: The device operates over an extended temperature range from -40°C to +125°C.
8. Package: Offered in an 8-pin SOIC package, facilitating straightforward integration into circuit designs.
These features make the INA240A3DR ideal for automotive, industrial, and consumer electronics applications where accurate current sensing is crucial.
Package
The INA240A3DR is a current sense amplifier packaged in a SOIC-8 (Small Outline Integrated Circuit) form, specifically with an 8-pin configuration. This package type is commonly used for surface mounting on PCBs (Printed Circuit Boards) and is suitable for applications requiring precise current measurements.
Pinout
The INA240A3DR is a precision current sense amplifier from Texas Instruments, typically used for high-side current sensing in various applications. The device comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here’s a brief overview of its pin functions:
1. V+ (Pin 1): Power supply voltage (2.7 V to 5.5 V).
2. OUT (Pin 2): Output voltage, proportional to the sensed current.
3. REF1 (Pin 3) and REF2 (Pin 4): Reference voltage pins used to set the output voltage baseline.
4. IN+ (Pin 5): Positive differential input, connected to the high-side of the current sense resistor.
5. IN- (Pin 6): Negative differential input, connected to the low-side of the current sense resistor.
6. GND (Pin 7): Ground.
7. NC (Pin 8): No connection, often used for mechanical stability on the PCB.
The INA240A3DR provides precise current measurements with high common-mode rejection, making it suitable for motor control and power management applications.
1. V+ (Pin 1): Power supply voltage (2.7 V to 5.5 V).
2. OUT (Pin 2): Output voltage, proportional to the sensed current.
3. REF1 (Pin 3) and REF2 (Pin 4): Reference voltage pins used to set the output voltage baseline.
4. IN+ (Pin 5): Positive differential input, connected to the high-side of the current sense resistor.
5. IN- (Pin 6): Negative differential input, connected to the low-side of the current sense resistor.
6. GND (Pin 7): Ground.
7. NC (Pin 8): No connection, often used for mechanical stability on the PCB.
The INA240A3DR provides precise current measurements with high common-mode rejection, making it suitable for motor control and power management applications.
Manufacturer
The INA240A3DR is manufactured by Texas Instruments Incorporated. Texas Instruments, commonly known as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. They are one of the largest producers of chips globally, catering to a wide range of electronics applications. The company is known for its innovation in analog and embedded processing products, providing solutions for industries such as automotive, industrial, consumer electronics, and communications equipment.
Application
The INA240A3DR is a current sense amplifier designed for precise current measurement. Its application areas include motor control, power management, and battery monitoring systems. It is used in industrial automation, automotive systems for monitoring and controlling electric motors, and renewable energy systems for managing power conversion and storage. Its high precision and capability to measure bidirectional currents make it suitable for applications requiring accurate current monitoring and protection.
Equivalent
The INA240A3DR is a high-precision, bidirectional current sense amplifier. Equivalent products include:
1. MAX49900 by Maxim Integrated
2. ACS770 by Allegro MicroSystems
3. AD8418A by Analog Devices
4. TPS7A4901 by Texas Instruments (similar application, different function)
Ensure compatibility based on your specific requirements, such as gain, bandwidth, and supply voltage. Always check the datasheets for detailed specifications.
1. MAX49900 by Maxim Integrated
2. ACS770 by Allegro MicroSystems
3. AD8418A by Analog Devices
4. TPS7A4901 by Texas Instruments (similar application, different function)
Ensure compatibility based on your specific requirements, such as gain, bandwidth, and supply voltage. Always check the datasheets for detailed specifications.
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