Texas Instruments

INA240A1DR

The INA240A1DR is a high-side current sensor from Texas Instruments. It is designed to measure both AC and DC currents in a wide range of applications, including battery monitoring, solar energy systems, and motor control.

Description:

The INA240A1DR is a monolithic, precision current sensor that can measure currents up to ±10A. It uses a small shunt resistor to convert the current to a proportional voltage, which is then amplified and filtered by the device's internal circuitry. The output is a rail-to-rail, differential signal that can be easily interfaced with microcontrollers or other digital systems.

Features:

• High accuracy: The INA240A1DR has a typical accuracy of ±0.5% of the reading.
• Wide input range: The device can measure currents from ±100µA to ±10A.
• Low power consumption: The INA240A1DR operates on a supply voltage of 2.7V to 5.5V and has a typical supply current of only 175µA.
• Programmable gain: The gain of the INA240A1DR can be adjusted via an external resistor, allowing for flexibility in the input current range.
• Rail-to-rail output: The output voltage of the INA240A1DR is proportional to the input current and spans the entire supply voltage range.
• Small package: The device is available in a compact 10-pin WSON package.

Applications:

The INA240A1DR is suitable for a wide range of applications where precise current measurement is required. Some examples include:

• Battery monitoring systems: The INA240A1DR can be used to measure the current flowing in and out of a battery, allowing for accurate monitoring of the battery's state of charge.
• Solar energy systems: The device can be used to measure the current generated by solar panels, providing information on the system's power output.
• Motor control: The INA240A1DR can be used to measure the current flowing through a motor, allowing for precise control of the motor's speed and torque.
• Power supplies: The device can be used to measure the output current of a power supply, providing feedback for closed-loop regulation.

Overall, the INA240A1DR is a versatile and accurate current sensor that is well-suited for a wide range of applications where precise current measurement is required.