INA280-Q1

The INA280-Q1 is a high-precision, low-offset, zero-drift current sense amplifier designed for automotive and industrial applications. It features a wide supply voltage range from 2.7 V to 5.5 V, enabling compatibility with various power systems while maintaining stable performance under varying conditions. The device offers a very low input offset voltage of just 30 µV and a maximum drift of 0.1 µV/°C, ensuring accurate current measurement even in harsh environments. This amplifier includes a built-in gain of 50 V/V, which simplifies circuit design by reducing the need for external components. It supports both single-supply and split-supply operation, making it suitable for diverse system architectures. The INA280-Q1 operates over an extended temperature range from –40°C to +125°C, meeting the stringent requirements of automotive-grade reliability standards such as AEC-Q100 Grade 1 certification. The device incorporates advanced protection features including overvoltage protection on the input pins up to 60 V, which enhances robustness against transient events like load dumps or inductive kickback. Its integrated current sense capability allows for precise monitoring of current flow in high-side and low-side configurations, making it ideal for battery management systems, motor control, and power conversion circuits. Designed for ease of use, the INA280-Q1 provides a rail-to-rail output swing that maximizes dynamic range and minimizes signal loss. It also includes internal EMI filtering and noise reduction techniques, resulting in excellent common-mode rejection ratio (CMRR) and power-supply rejection ratio (PSRR), which are critical for maintaining accuracy in noisy electrical environments. The INA280-Q1 is particularly well-suited for applications requiring reliable and accurate current sensing in electric vehicles, onboard chargers, DC-DC converters, and industrial automation equipment. Its combination of precision, ruggedness, and ease of integration makes it a preferred choice for engineers seeking robust solutions in demanding environments.