사양
| 속성 | 가치 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Function | Current Monitor |
| SensingMethod | High-Side |
| Accuracy | ±0.5% |
| Voltage-Input | 2.7V ~ 40V |
| OperatingTemperature | -40°C ~ 125°C (TA) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
개요
Description
The INA139NA/3K is a high-side current shunt monitor from Texas Instruments, designed to measure differential voltage across a shunt resistor, which is indicative of current flow. Operating over a wide voltage range, it translates this voltage into a proportional output current, which can then be converted to a voltage by passing through a resistor. This makes it suitable for monitoring current in various applications, including power management, battery chargers, and motor controls.
Key features of the INA139NA/3K include a wide supply voltage range (2.7V to 40V), low quiescent current, and the ability to sense small differential voltages in high-side current monitoring. Its design offers low offset voltage, ensuring accuracy in current measurement, and it comes in a compact SOT-23 package, making it suitable for space-constrained applications.
The device is noted for its simplicity and ease of use, requiring minimal external components, and provides a cost-effective solution for current sensing needs in various electronic applications.
Key features of the INA139NA/3K include a wide supply voltage range (2.7V to 40V), low quiescent current, and the ability to sense small differential voltages in high-side current monitoring. Its design offers low offset voltage, ensuring accuracy in current measurement, and it comes in a compact SOT-23 package, making it suitable for space-constrained applications.
The device is noted for its simplicity and ease of use, requiring minimal external components, and provides a cost-effective solution for current sensing needs in various electronic applications.
Equivalent
The INA139NA/3K is a current shunt monitor by Texas Instruments. Equivalent products include:
1. MAX4070 series by Maxim Integrated,
2. LT1999 series by Analog Devices,
3. ACS712 by Allegro Microsystems,
4. ISL28006 by Renesas Electronics.
These alternatives offer similar functionalities, such as current sensing and monitoring, but specifications may vary, so it's important to review datasheets to ensure compatibility with your specific application.
1. MAX4070 series by Maxim Integrated,
2. LT1999 series by Analog Devices,
3. ACS712 by Allegro Microsystems,
4. ISL28006 by Renesas Electronics.
These alternatives offer similar functionalities, such as current sensing and monitoring, but specifications may vary, so it's important to review datasheets to ensure compatibility with your specific application.
Features
The INA139NA/3K is a high-side current shunt monitor from Texas Instruments. Key features include:
1. Wide Supply Voltage Range: Operates from 2.7V to 40V, making it versatile for various applications.
2. High Accuracy: Offers a typical accuracy of 1% with low offset voltage, ensuring precise current measurements.
3. Wide Common-Mode Voltage Range: Supports common-mode voltages from 2.7V to 40V, allowing it to monitor currents in high-side applications.
4. Low Quiescent Current: Consumes minimal power, with a typical quiescent current of 60μA, which is beneficial for battery-operated devices.
5. Gain Option: Fixed gain of 50, suitable for many current sensing applications.
6. Compact Package: Available in a small SOT-23 package, facilitating space-constrained designs.
7. Temperature Range: Operates over a wide temperature range from -40°C to 125°C, suitable for industrial environments.
These features make the INA139NA/3K ideal for current sensing in power management, motor control, and battery monitoring applications.
1. Wide Supply Voltage Range: Operates from 2.7V to 40V, making it versatile for various applications.
2. High Accuracy: Offers a typical accuracy of 1% with low offset voltage, ensuring precise current measurements.
3. Wide Common-Mode Voltage Range: Supports common-mode voltages from 2.7V to 40V, allowing it to monitor currents in high-side applications.
4. Low Quiescent Current: Consumes minimal power, with a typical quiescent current of 60μA, which is beneficial for battery-operated devices.
5. Gain Option: Fixed gain of 50, suitable for many current sensing applications.
6. Compact Package: Available in a small SOT-23 package, facilitating space-constrained designs.
7. Temperature Range: Operates over a wide temperature range from -40°C to 125°C, suitable for industrial environments.
These features make the INA139NA/3K ideal for current sensing in power management, motor control, and battery monitoring applications.
Pinout
The INA139NA/3K is a high-side, unidirectional current-shunt monitor designed to measure small differential voltages across a current-sensing resistor in the presence of large, common-mode voltages. It is housed in a SOT-23-5 package, meaning it has five pins.
The pin functions are as follows:
1. V+ (Pin 1): Power supply pin.
2. OUT (Pin 2): Output pin, which provides a voltage proportional to the load current.
3. GND (Pin 3): Ground connection.
4. IN- (Pin 4): Negative input pin, connected to the load side of the shunt resistor.
5. IN+ (Pin 5): Positive input pin, connected to the supply side of the shunt resistor.
This configuration allows the device to accurately measure current and generate a proportional output voltage while maintaining high common-mode rejection.
The pin functions are as follows:
1. V+ (Pin 1): Power supply pin.
2. OUT (Pin 2): Output pin, which provides a voltage proportional to the load current.
3. GND (Pin 3): Ground connection.
4. IN- (Pin 4): Negative input pin, connected to the load side of the shunt resistor.
5. IN+ (Pin 5): Positive input pin, connected to the supply side of the shunt resistor.
This configuration allows the device to accurately measure current and generate a proportional output voltage while maintaining high common-mode rejection.
Manufacturer
The INA139NA/3K is manufactured by Texas Instruments (TI). Texas Instruments is a well-known American technology company that designs and manufactures semiconductors and various integrated circuits. They are a major player in the electronics industry, providing components that are used in a wide range of applications, including consumer electronics, automotive systems, industrial machinery, and communications equipment. TI is renowned for its innovation in analog and embedded processing technologies, and it serves a global market with a diverse product portfolio.
Application
The INA139NA/3K is a current-shunt monitor and is commonly used for applications requiring current measurement and power management. Typical application areas include:
1. Battery Management Systems: Monitoring charge and discharge currents in battery packs.
2. Power Supplies: Current monitoring in power converters and supply lines to ensure proper operation and efficiency.
3. Industrial Automation: Supervising motor currents and protecting against overcurrent conditions.
4. Telecommunications: Monitoring currents in base stations and network equipment.
5. Automotive Systems: Used in electric and hybrid vehicles for monitoring battery and motor currents.
Its features, such as high accuracy and wide supply voltage range, make it suitable for these and other applications requiring precise current sensing.
1. Battery Management Systems: Monitoring charge and discharge currents in battery packs.
2. Power Supplies: Current monitoring in power converters and supply lines to ensure proper operation and efficiency.
3. Industrial Automation: Supervising motor currents and protecting against overcurrent conditions.
4. Telecommunications: Monitoring currents in base stations and network equipment.
5. Automotive Systems: Used in electric and hybrid vehicles for monitoring battery and motor currents.
Its features, such as high accuracy and wide supply voltage range, make it suitable for these and other applications requiring precise current sensing.
Package
The INA139NA/3K is packaged in a SOT-23-5 configuration, which is a small-outline transistor package with five leads. This type of package is commonly used for surface-mount technology, allowing the device to be mounted directly onto the surface of printed circuit boards (PCBs).
