The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, high-speed, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications.
●Input common-mode and power-supply voltages are independent and can range from 2.7 V to 40 V for the INA139 and 2.7 V to 60 V for the INA169. Quiescent current is only 60 µA, 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. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.
●Both the INA139 and INA169 are available in 5-pin SOT-23 packages, and are specified for the –40°C to 85°C temperature range.
● Complete Unipolar High-side Current
●Measurement Circuit
● Wide Supply and Common-Mode Range
● INA139: 2.7 V to 40 V
● INA169: 2.7 V to 60 V
● Independent Supply and Input Common-Mode
●Voltages
● Single Resistor Gain Set
● Low Quiescent Current: 60 µA (Typical)
● 5-Pin, SOT-23 Packages
