INA138NA/250G4

TEXAS INSTRUMENTS  INA138NA/250G4  电流检测放大器, 单极, 1个放大器, 2 µA, SOT-23, 5 引脚, -40 °C, 125 °C

The is a 36V, high-side, Current Output Current Shunt Monitor, laser trimmed for very low offset voltage 50µV, drift 0.5µV/°C and high common-mode rejection 120dB at G >=100. It operates with power supplies as low as ±2.25V and quiescent current is only 700µA - ideal for battery-operated systems. Internal input protection can withstand up to ±40V without damage. The INA138NA/250G4 is high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, low quiescent current. Input common-mode and power-supply voltages are independent and can range from 2.7 to 36V for the INA138NA/250G4. Quiescent current is only 25µA, which permits connecting the power supply to either side of the current measurement shunt with minimal error. The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100.

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Complete unipolar high-side current measurement circuit

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Wide supply and common-mode range

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Independent supply and input common-mode voltages

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Single resistor gain set

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Low quiescent current of 25µA typical

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Green product and no Sb/Br

Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.