Texas Instruments INA138 High-Side Measurement Current Shunt Monitor, Current Output INA138NA/3KG4

The INA138 High-Side Measurement Current Shunt Monitor is designed for unipolar current measurement applications. It operates within a supply voltage range of 2.7 V to 36 V and features a low quiescent current of 25 ¬µA, making it suitable for battery-powered devices. The device can measure input common-mode voltages independently, allowing for flexible circuit designs. It converts a differential input voltage to a current output, which can be scaled to a desired gain using an external load resistor, supporting gains from 1 to over 100. The INA138 is packaged in a compact 5-pin SOT-23 format and is rated for operation across a wide temperature range of -40¬8C to +125¬8C. Applications include current shunt measurement in portable systems, battery chargers, and power management solutions.