INA190A3IRSWR

The INA190A3IRSWR is a precision current sense amplifier manufactured by Texas Instruments. It is designed to provide accurate current sensing in a variety of applications, including battery management systems, power monitoring, and motor control. Here’s a detailed description of its key features and specifications:

General Overview:

• Type: Current Sense Amplifier
• Manufacturer: Texas Instruments
• Package: The INA190A3IRSWR comes in a small, surface-mount package (SOT-23), which is ideal for space-constrained applications.

Key Features:

• High Precision: The INA190A3 offers a high common-mode rejection ratio (CMRR) and low offset voltage, ensuring accurate current measurements even in noisy environments.
• Wide Supply Voltage Range: It operates over a supply voltage range of 2.7V to 5.5V, making it suitable for various battery-operated devices.
• Low Input Offset Voltage: The device features a low input offset voltage, typically around 50 µV, which enhances measurement accuracy.
• Gain Options: The amplifier has a fixed gain of 100 V/V, allowing for easy integration into current sensing applications without the need for external components.
• Low Power Consumption: The INA190A3 is designed for low power operation, with a quiescent current of only 10 µA, making it ideal for battery-powered applications.
• High Bandwidth: It has a bandwidth of approximately 1 MHz, which allows for fast response times in dynamic current sensing applications.

Electrical Characteristics:

• Input Common-Mode Voltage Range: The device can handle a wide input common-mode voltage range, typically from -0.1V to 26V, which is beneficial for high-side current sensing.
• Output Voltage Swing: The output voltage can swing close to the supply rails, providing flexibility in interfacing with various analog-to-digital converters (ADCs) or microcontrollers.
• Temperature Range: The INA190A3 is rated for operation over an extended temperature range, typically from -40°C to +125°C, ensuring reliability in harsh environments.

Applications:

• Battery Management Systems: Used for monitoring battery charge and discharge currents.
• Power Monitoring: Ideal for applications requiring precise power consumption measurements.
• Motor Control: Useful in sensing motor currents for feedback in control systems.
• Load Monitoring: Can be employed in systems that require load current measurement for efficiency analysis.

Conclusion:

The INA190A3IRSWR from Texas Instruments is a versatile and highly accurate current sense amplifier that is well-suited for a range of applications requiring precise current measurement. Its combination of low power consumption, high precision, and wide operating range makes it an excellent choice for modern electronic designs.