仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| AmplifierType | Current Sense |
| NumberofCircuits | 1 |
| SlewRate | 2.5V/µs |
| GainBandwidthProduct | 1.3 MHz |
| Current-InputBias | 20 µA |
| Voltage-InputOffset | 100 µV |
| Current-Supply | 1.5mA |
| Voltage-SupplySpan(Min) | 2.7 V |
| Voltage-SupplySpan(Max) | 20 V |
| OperatingTemperature | -40°C ~ 125°C (TA) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
概要
Description
The INA281A1IDBVR is a high-precision, current-sense amplifier from Texas Instruments. It is designed for applications requiring accurate current measurement and monitoring. This device offers features such as a wide input common-mode voltage range from -4 V to +110 V, making it suitable for high-side and low-side current sensing. The INA281A1IDBVR provides an excellent gain accuracy with a gain error of just 0.3% and features a gain of 20 V/V, ensuring precise amplification of the sensed current.
The amplifier operates over a supply voltage range of 2.7 V to 5.5 V and is available in a small SOT-23 package, allowing for compact PCB designs. Its fast response time and high bandwidth make it suitable for dynamic current measurement in fast-switching applications such as motor control, power management, and battery monitoring. The INA281A1IDBVR also offers a low offset voltage, which contributes to its high measurement accuracy. Overall, this device is ideal for engineers looking for a reliable and efficient solution for current sensing in various electronic applications.
The amplifier operates over a supply voltage range of 2.7 V to 5.5 V and is available in a small SOT-23 package, allowing for compact PCB designs. Its fast response time and high bandwidth make it suitable for dynamic current measurement in fast-switching applications such as motor control, power management, and battery monitoring. The INA281A1IDBVR also offers a low offset voltage, which contributes to its high measurement accuracy. Overall, this device is ideal for engineers looking for a reliable and efficient solution for current sensing in various electronic applications.
Equivalent
The INA281A1IDBVR is a high-precision, current-sense amplifier manufactured by Texas Instruments. Equivalent products may include:
1. MAX4372 or MAX4373 by Maxim Integrated - Current-Sense Amplifier.
2. LT6105 by Analog Devices - High Voltage Current Sense Amplifier.
3. MCP6H01 by Microchip Technology - High-Speed Op Amp (with similar applications).
4. ZXCT1009 by Diodes Incorporated - High-Side Current Monitor.
These alternatives have similar functionality but may differ in specifications, so check the datasheets for compatibility with your application.
1. MAX4372 or MAX4373 by Maxim Integrated - Current-Sense Amplifier.
2. LT6105 by Analog Devices - High Voltage Current Sense Amplifier.
3. MCP6H01 by Microchip Technology - High-Speed Op Amp (with similar applications).
4. ZXCT1009 by Diodes Incorporated - High-Side Current Monitor.
These alternatives have similar functionality but may differ in specifications, so check the datasheets for compatibility with your application.
Features
The INA281A1IDBVR is a high-precision current sense amplifier designed by Texas Instruments. Key features include:
1. Wide Input Common-Mode Voltage Range: Operates from –4 V to +110 V, supporting both high-side and low-side current sensing applications.
2. High Accuracy: Offers excellent precision with a gain of 20 V/V and low offset voltage, providing accurate measurements even at low currents.
3. Low Offset Drift: Ensures consistent performance over temperature variations, enhancing reliability in various environmental conditions.
4. Fast Response Time: Features a quick settling time, making it suitable for fast transient applications.
5. Low Quiescent Current: With a low power consumption, it is ideal for battery-operated devices.
6. Package: Available in a small SOT-23 package, facilitating easy integration into space-constrained designs.
7. Robust Performance: Built to handle high-voltage spikes, ensuring durability and stability in demanding applications.
This amplifier is ideal for use in a variety of sectors, including automotive, industrial, and telecommunications, where precise current measurement is essential.
1. Wide Input Common-Mode Voltage Range: Operates from –4 V to +110 V, supporting both high-side and low-side current sensing applications.
2. High Accuracy: Offers excellent precision with a gain of 20 V/V and low offset voltage, providing accurate measurements even at low currents.
3. Low Offset Drift: Ensures consistent performance over temperature variations, enhancing reliability in various environmental conditions.
4. Fast Response Time: Features a quick settling time, making it suitable for fast transient applications.
5. Low Quiescent Current: With a low power consumption, it is ideal for battery-operated devices.
6. Package: Available in a small SOT-23 package, facilitating easy integration into space-constrained designs.
7. Robust Performance: Built to handle high-voltage spikes, ensuring durability and stability in demanding applications.
This amplifier is ideal for use in a variety of sectors, including automotive, industrial, and telecommunications, where precise current measurement is essential.
Pinout
The INA281A1IDBVR is a high-side current sense amplifier that features a 5-pin package. The pins are typically configured as follows:
1. V+ (Power Supply): This pin is connected to the supply voltage, providing power to the device.
2. OUT (Output): This pin outputs the amplified voltage that corresponds to the sensed current across the shunt resistor.
3. GND (Ground): This pin is connected to the ground reference.
4. IN+ (Positive Input): This pin connects to the positive side of the shunt resistor to measure the voltage drop.
5. IN- (Negative Input): This pin connects to the negative side of the shunt resistor.
The primary function of the INA281A1IDBVR is to monitor current by amplifying the voltage across a shunt resistor placed in the path of the current being measured. The device is designed for applications requiring precise current measurements, offering high accuracy and a wide common-mode voltage range, making it suitable for various automotive, industrial, and consumer electronics applications.
1. V+ (Power Supply): This pin is connected to the supply voltage, providing power to the device.
2. OUT (Output): This pin outputs the amplified voltage that corresponds to the sensed current across the shunt resistor.
3. GND (Ground): This pin is connected to the ground reference.
4. IN+ (Positive Input): This pin connects to the positive side of the shunt resistor to measure the voltage drop.
5. IN- (Negative Input): This pin connects to the negative side of the shunt resistor.
The primary function of the INA281A1IDBVR is to monitor current by amplifying the voltage across a shunt resistor placed in the path of the current being measured. The device is designed for applications requiring precise current measurements, offering high accuracy and a wide common-mode voltage range, making it suitable for various automotive, industrial, and consumer electronics applications.
Manufacturer
The INA281A1IDBVR is manufactured by Texas Instruments, a global semiconductor company. Texas Instruments is known for designing and manufacturing a wide range of analog and embedded processing chips. They cater to various industries, including automotive, industrial, personal electronics, and communications equipment. The company is recognized for its innovation in creating efficient and reliable integrated circuits and is one of the largest semiconductor companies in the world.
Application
The INA281A1IDBVR is a high-precision, bidirectional current sense amplifier used in various applications, including power management systems, battery monitoring, automotive systems, and telecommunications equipment. Its capability to accurately measure current across a wide voltage range makes it ideal for use in DC/DC converters, motor control applications, and server power supplies. Additionally, it is used in overcurrent protection and energy metering applications due to its high accuracy and low offset voltage, providing precise current measurements essential for efficiency and safety in electronic systems.
Package
The INA281A1IDBVR is a current sense amplifier manufactured by Texas Instruments. It comes in a SOT-23 package type, specifically a 6-pin SOT-23 (DBV) package. This package is compact, suitable for surface-mount technology, and designed for precision current sensing applications.
