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
All trademarks are the property of their respective owners.
Description for the INA139
The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide inputcommon-mode voltage range, high-speed, low quiescent current, and tiny SOT-23 packaging enable usein a variety of applications.
Input common-mode and power-supply voltages are independent and can range from 2.7 V to40 V for the INA139 and 2.7 V to 60 V for the INA169. Quiescent current is only 60 µA, whichpermits connecting the power supply to either side of the current measurement shunt with minimalerror.
The device converts a differential input voltage to a current output. This current isconverted 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 inmeasurement and level shifting.
Both the INA139 and INA169 are available in 5-pin SOT-23 packages. The INA139 device isspecified for the –40°C to +125°C temperature range, and the INA169 is specified from –40°C to+85°C.
NEW - You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.
A custom reel
is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.
Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.TI often ships
devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.
Select date code requirements
Ship to and currency selection
Please select your region and currency to update your cart. You will be able to select payment methods, importation responsibility and tax liability during the checkout process.