Texas Instruments INA181A2IDBVR Current-Sense Amplifier

The INA181A2IDBVR from Texas Instruments is a high-precision current-sense amplifier that provides a versatile solution for accurate current measurement in a wide range of applications. This device is part of the INA181 series, which are bidirectional, zero-drift current shunt monitors that can sense drops across shunts at common-mode voltages from -0.2 V to +26 V, independent of the supply voltage.

Encased in a compact SOT-23 package, the INA181A2IDBVR offers a fixed gain of 20 V/V, allowing for easy integration into space-constrained applications without the need for external gain-setting components. Its low input bias current (±500 nA, maximum) and zero-drift architecture ensure high accuracy and stability over time and temperature, making it an ideal choice for precision sensing requirements.

With an operating temperature range of -40°C to +125°C, the INA181A2IDBVR is suitable for use in harsh environments, maintaining performance in both industrial and automotive applications. The device is also characterized for operation from -40°C to +125°C, ensuring reliable operation across a broad spectrum of conditions.

Key features of the INA181A2IDBVR include:

• Common-mode voltage range: -0.2 V to +26 V
• Quiescent current: 260 µA (typical)
• Gain error: ±0.5% (maximum)
• Input offset voltage: ±80 µV (maximum)
• Supply voltage: 2.7 V to 5.5 V
• Bandwidth: 350 kHz (typical)

This current-sense amplifier is designed for easy implementation in systems requiring current monitoring, such as battery chargers, power management, overcurrent protection, and precision current measurement for system optimization. Its high accuracy and low power consumption make it an excellent choice for portable and battery-powered applications, where efficiency and extended operation times are critical.

Whether you are designing power supplies, motor controls, or monitoring system loads, the INA181A2IDBVR from Texas Instruments provides a reliable and precise current sensing solution that enhances the performance and safety of your electronic systems.