INA138NA/3K

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INA138NA/3K

IC CURRENT MONITOR 0.5% SOT23-5

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規格

Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
Function Current Monitor
SensingMethod High-Side
Accuracy ±0.5%
Voltage-Input 2.7V ~ 36V
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case SC-74A, SOT-753

概述

Description

The INA138NA/3K is a high-side, unipolar current shunt monitor designed for accurate current measurement applications. Housed in a small SOT-23 package, this device converts a differential input voltage, generated by the load current flowing through an external shunt resistor, into a proportional output current. This output current is typically converted to a voltage using a resistor, which can then be fed into an analog-to-digital converter for further processing.
Key features of the INA138NA/3K include:
1. Wide Supply Voltage Range: It operates from 2.7V to 36V, making it adaptable for diverse applications.
2. High Common-Mode Voltage: The device supports up to 36V common-mode voltage, suitable for high-side current sensing.
3. Low Offset Voltage: Ensures precision by minimizing measurement errors.
4. Wide Bandwidth: Suitable for fast current monitoring in dynamic systems.
5. Low Power Consumption: Ideal for battery-operated devices.
Typical applications include power management, motor control, and battery management systems. The device is valued for its accuracy, compact design, and ease of use in a variety of current sensing applications.

Features

The INA138NA/3K is a high-side, unidirectional current-shunt monitor from Texas Instruments. It is designed for precision current measurement in various applications. Here are some key features:
1. High-Side Sensing: Allows for current measurement without disrupting the ground path, making it suitable for a wide range of applications.
2. Wide Supply Voltage Range: Operates with supply voltages from 2.7V to 36V, providing flexibility for different system requirements.
3. Wide Common-Mode Range: Supports common-mode voltage ranges from 2.7V to 36V, accommodating various load conditions.
4. High Accuracy and Linearity: Offers precise current measurement with low offset voltage and gain error, ensuring accurate monitoring.
5. Current Output: Provides a current output proportional to the load current, which can be easily converted to a voltage using an external resistor.
6. Small Package Size: Available in a compact SOT-23 package, facilitating space-constrained designs.
7. Temperature Range: Operates effectively over a wide temperature range from -40°C to 125°C, suitable for harsh environments.
These features make the INA138NA/3K ideal for battery management systems, power supply modules, and other applications requiring accurate current monitoring.

Package

The INA138NA/3K is a current shunt monitor from Texas Instruments. It is typically housed in an SOT-23 package, which is a small-outline transistor package commonly used for surface-mounted devices.

Pinout

The INA138NA/3K is a current-shunt monitor IC. It comes in an SOT-23 package and typically has a 5-pin configuration. The pin functions are as follows:
1. IN+: Non-inverting input. Connects to the positive side of the shunt resistor.
2. IN-: Inverting input. Connects to the negative side of the shunt resistor.
3. V- (GND): Ground. Connects to the ground of the system.
4. OUT: Output. Provides a current proportional to the differential input voltage, which is typically developed across a shunt resistor.
5. V+: Supply voltage. Connects to the positive supply voltage.
The INA138 is used for high-side current sensing and is designed to convert a differential voltage (developed across a shunt resistor) into an output current, which can then be converted to a voltage using a load resistor. This IC is used in applications requiring current measurement, such as power management systems.

Manufacturer

The INA138NA/3K is manufactured by Texas Instruments. Texas Instruments is a global semiconductor design and manufacturing company that develops analog and embedded processing chips. The company is known for its innovation in the electronics sector, producing a wide range of products including microcontrollers, sensors, and power management solutions. Founded in 1930 and headquartered in Dallas, Texas, Texas Instruments serves various industries, including automotive, industrial, personal electronics, and communications equipment. The company's focus is on developing technologies that make electronics more affordable and accessible, supporting advancements in automation, connectivity, and energy efficiency.

Application

The INA138NA/3K is a current shunt monitor used in applications requiring precision current measurement. Its typical application areas include battery management systems, power management in telecommunications, automotive and industrial power systems, and load current monitoring in power supplies and motor controls. It is also used in instrumentation, energy metering, and overcurrent protection systems, where accurate current sensing is critical.

Equivalent

Equivalent products to the INA138NA/3K, a high-side current shunt monitor from Texas Instruments, include:
1. MAX9610 by Maxim Integrated - Precision high-side current-sense amplifier.
2. LT1999 by Analog Devices - Differential amplifier for current sensing.
3. ZXCT1009 by Diodes Incorporated - High-side current monitor.
4. ISL28006 by Renesas Electronics - Current sense amplifier.
Ensure compatibility with your specific application requirements when selecting an equivalent.

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