INA240A3DR

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INA240A3DR

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  • ManufacturerTexas Instruments

  • Mfr. Part #INA240A3DR

  • In Stock6799

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Specifications

Attribute Value
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)

Overview

Description

The INA240A3DR is a high-precision current sense amplifier designed by Texas Instruments. It is part of the INA240 family, which is optimized for applications that require accurate current measurements in the presence of large common-mode voltages and high PWM (pulse-width modulation) frequencies. This particular model offers a gain of 50 V/V, providing a good balance between sensitivity and range.
Key features include enhanced PWM rejection, which minimizes errors during high-frequency switching, and a wide operating voltage range from -4V to +80V, making it suitable for various industrial and automotive applications. The INA240A3DR operates over a temperature range of -40°C to +125°C, ensuring reliability under harsh conditions.
The device comes in an SOIC-8 package, facilitating easy integration into circuit designs. Its precision and robustness make it ideal for use in motor control systems, battery monitoring, and other applications requiring efficient current monitoring. With low offset voltage and drift, the INA240A3DR can deliver accurate performance in demanding environments.

Equivalent

The INA240A3DR is a current sense amplifier. Equivalent products include:
1. MAX44284: Low-side current sense amplifier from Maxim Integrated.
2. LT6100: Precision current sense amplifier from Analog Devices.
3. LTC6102: High voltage current sense amplifier from Analog Devices.
4. AD8418: High precision current sense amplifier from Analog Devices.
5. CSM3636: High-side current sense amplifier from AMS.
Always verify compatibility with your requirements, such as gain, bandwidth, and operating voltage.

Features

The INA240A3DR is a high-precision, bidirectional current sense amplifier designed for high-side and low-side current sensing applications. It features an enhanced PWM rejection capability, making it ideal for motor control and other applications with pulse width modulated (PWM) signals. The device operates over a wide supply voltage range from 2.7 V to 5.5 V and offers a gain of 100 V/V. It supports a common-mode voltage range of –4 V to +80 V, which makes it suitable for a variety of applications, including those with negative voltages.
The amplifier provides excellent accuracy with a maximum offset voltage of ±25 µV and a gain error of 0.2%. It also boasts a low input bias current of 15 µA, which helps minimize errors due to current leakage. The INA240A3DR is available in a small SOIC-8 package, making it convenient for space-constrained applications. Its robust design ensures reliable performance in harsh environments, making it suitable for automotive, industrial, and consumer electronics applications.

Pinout

The INA240A3DR is a high-precision current-sense amplifier from Texas Instruments, designed for applications requiring accurate current measurement. This device comes in an 8-pin SOIC (Small Outline Integrated Circuit) package.
Here is a concise overview of its pin functions:
1. IN+: Non-inverting input of the differential amplifier. Connects to the high side of the shunt resistor.
2. IN-: Inverting input of the differential amplifier. Connects to the low side of the shunt resistor.
3. REF1: Reference voltage input 1. Used to set the output reference voltage.
4. REF2: Reference voltage input 2. Used for setting the output reference voltage, can be tied to REF1 for single-ended reference.
5. GND: Ground pin.
6. OUT: Output voltage pin. Provides the amplified current-sense voltage.
7. VS: Power supply input. Requires a supply voltage between 2.7 V and 5.5 V.
8. NC (No Connect): Typically left unconnected to maintain isolation or balance within the internal circuitry.
The INA240A3DR excels in high-precision applications due to its excellent common-mode rejection and high bandwidth.

Manufacturer

The INA240A3DR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide array of analog and embedded processing chips. These chips are used in various electronic systems and devices, serving industries such as automotive, industrial, personal electronics, communications, and enterprise systems.
TI is well-known for its innovation in analog technology, making it a leader in the development of microcontrollers, digital signal processors (DSPs), and other semiconductor solutions. The company focuses on creating products that improve the performance and efficiency of electronic devices while reducing their energy consumption. With a strong emphasis on research and development, Texas Instruments continues to push the boundaries of semiconductor technology to meet the evolving needs of its customers around the world.

Application

The INA240A3DR is a precision current sense amplifier designed for high-side and low-side current sensing in various applications. Key areas include motor control systems, where it monitors current to ensure efficient operation and protect against over-current conditions. It's also used in power management systems for precise power usage tracking and battery management systems to ensure safe charging and discharging of batteries. Additionally, it's suitable for industrial automation systems for monitoring current in actuators and other components. Its enhanced PWM rejection capability makes it ideal for environments with switching noise, such as inverters and converters.

Package

The INA240A3DR is a surface-mount package known as SOIC-8 (Small Outline Integrated Circuit with 8 pins). It is part of Texas Instruments' INA240 series of current sense amplifiers designed for precise current measurement applications.

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