INA139NA/3K
IC CURRENT MONITOR 0.5% SOT23-5
型号
INA139NA/3K
制造商/品牌
系列
-
零件状态
Active
包装
Tape & Reel (TR)
工作温度
-40°C ~ 85°C
安装类型
Surface Mount
封装/箱体
SC-74A, SOT-753
电压 - 输入
2.7 V ~ 40 V
供应商器件封装
SOT-23-5
功能
Current Monitor
电流 - 输出
-
传感方法
High-Side
准确性
±0.5%
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About Texas Instruments
Texas Instruments (TI) is a publicly traded company that designs and manufactures semiconductor and computer technology products.
It was founded in 1930 and is headquartered in Dallas, Texas.
TI is a global leader in the production of analog and digital signal processing (DSP) integrated circuits, as well as embedded processors and other microcontroller products.
The company serves customers in a variety of industries, including automotive, communications, computing, industrial, and consumer electronics.
TI's product portfolio includes data converters, amplifiers and comparators, power management ICs, microcontrollers, sensors, and wireless connectivity solutions, among others.
TI is committed to innovation and customer satisfaction, and has a long history of delivering high-quality, reliable products to its customers.
With a focus on sustainability and energy efficiency, TI is dedicated to making a positive impact on the world through its technology and products.
*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.
Texas Instruments (TI) is a publicly traded company that designs and manufactures semiconductor and computer technology products.
It was founded in 1930 and is headquartered in Dallas, Texas.
TI is a global leader in the production of analog and digital signal processing (DSP) integrated circuits, as well as embedded processors and other microcontroller products.
The company serves customers in a variety of industries, including automotive, communications, computing, industrial, and consumer electronics.
TI's product portfolio includes data converters, amplifiers and comparators, power management ICs, microcontrollers, sensors, and wireless connectivity solutions, among others.
TI is committed to innovation and customer satisfaction, and has a long history of delivering high-quality, reliable products to its customers.
With a focus on sustainability and energy efficiency, TI is dedicated to making a positive impact on the world through its technology and products.
*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.
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36V, High-Side, High-Speed, Current Output Current Sense Amplifier
Pin Count--------5
Part Category--------Integrated Circuit
Package Category--------SOT23 (5-Pin)
Footprint Name--------SOT23 (5-Pin) - DBV
Pin Count--------5
Part Category--------Integrated Circuit
Package Category--------SOT23 (5-Pin)
Footprint Name--------SOT23 (5-Pin) - DBV
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INA139NA/3K Frequently Asked Questions (FAQs)
What is the maximum input voltage that the INA139NA/3K can handle?
The INA139NA/3K can handle input voltages up to ±650mV, but it's recommended to keep the input voltage within ±500mV to ensure accurate measurements.
How do I choose the correct gain resistor for my application?
The gain resistor (Rg) should be chosen based on the desired gain and the input voltage range. A higher gain resistor value results in higher gain, but also increases noise and offset voltage. A good starting point is to use the recommended Rg value from the datasheet and adjust as needed for your specific application.
What is the purpose of the REF pin, and how do I use it?
The REF pin is a reference voltage output that can be used as a voltage reference for the system. It's typically connected to the analog-to-digital converter (ADC) reference input or used as a voltage reference for other components in the system. The REF pin output voltage is 1.024V ±1%.
How do I layout the PCB to minimize noise and ensure accurate measurements?
To minimize noise and ensure accurate measurements, keep the input signals away from noisy power supply lines and digital signals. Use a ground plane and keep the analog and digital grounds separate. Also, use a low-ESR capacitor (e.g., 10uF) between the VCC and GND pins to filter out noise.
What is the typical current consumption of the INA139NA/3K?
The typical current consumption of the INA139NA/3K is 380μA, but this can vary depending on the gain setting and input voltage range.
What is the maximum input voltage that the INA139NA/3K can handle?
The INA139NA/3K can handle input voltages up to ±650mV, but it's recommended to keep the input voltage within ±500mV to ensure accurate measurements.
How do I choose the correct gain resistor for my application?
The gain resistor (Rg) should be chosen based on the desired gain and the input voltage range. A higher gain resistor value results in higher gain, but also increases noise and offset voltage. A good starting point is to use the recommended Rg value from the datasheet and adjust as needed for your specific application.
What is the purpose of the REF pin, and how do I use it?
The REF pin is a reference voltage output that can be used as a voltage reference for the system. It's typically connected to the analog-to-digital converter (ADC) reference input or used as a voltage reference for other components in the system. The REF pin output voltage is 1.024V ±1%.
How do I layout the PCB to minimize noise and ensure accurate measurements?
To minimize noise and ensure accurate measurements, keep the input signals away from noisy power supply lines and digital signals. Use a ground plane and keep the analog and digital grounds separate. Also, use a low-ESR capacitor (e.g., 10uF) between the VCC and GND pins to filter out noise.
What is the typical current consumption of the INA139NA/3K?
The typical current consumption of the INA139NA/3K is 380μA, but this can vary depending on the gain setting and input voltage range.
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