Texas Instruments INA212BIRSWR Voltage Output, Bidirectional ZERO-DRIFT Series Current Shunt Monitor

The INA212BIRSWR from Texas Instruments is an innovative current shunt monitor that offers industry-leading precision and robustness. This device is part of the ZERO-DRIFT series, providing high accuracy with minimal temperature drift over time. It is an ideal choice for applications requiring precise current measurement, such as power management systems, battery chargers, and portable devices.

With its voltage output and bidirectional sensing capability, the INA212BIRSWR can measure current across shunts in both directions, which is crucial for systems that charge and discharge, like battery management systems. It operates over a common-mode voltage range from -0.3V to +26V, independent of the supply voltage, allowing for versatile use in multiple circuit configurations.

The device boasts a gain of 200 V/V, enabling it to amplify small differential voltage signals across a shunt resistor to levels that can be easily read by an analog-to-digital converter (ADC). This high gain also allows for the use of lower-value shunt resistors, minimizing power loss and improving overall system efficiency.

With its zero-drift architecture, the INA212BIRSWR ensures high accuracy with a maximum offset voltage of only 10 µV and a maximum offset drift of 0.1 µV/°C. This feature is particularly important for systems that operate over a wide temperature range, as it guarantees consistent performance regardless of temperature variations.

The device is offered in an ultra-small, leaded SOT-23 package that is optimized for space-constrained applications. Its small size, combined with its exceptional performance, makes the INA212BIRSWR a versatile and practical solution for a wide range of current sensing needs.

In summary, the Texas Instruments INA212BIRSWR is a high-precision, zero-drift current shunt monitor that provides accurate current measurement in both directions, making it an essential component for efficient and reliable electronic system design.