INA139NA/3K
Active2.7 TO 36V, 440KHZ VARIABLE GAIN CURRENT SENSE AMPLIFIER
INA139NA/3K
Active2.7 TO 36V, 440KHZ VARIABLE GAIN CURRENT SENSE AMPLIFIER
Description
General part information
INA139 Series
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.
Technical Specifications
Parameters and characteristics for this part
| Specification | INA139NA/3K |
|---|---|
| Accuracy | 0.5 % RH |
| Function | Current Monitor |
| Mounting Type | Surface Mount |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Package Name | SOT-23-5 |
| Sensing Method | High-Side |
| Voltage - Input (Maximum) | 40 V |
| Voltage - Input (Minimum) | 2.7 V |
Pricing
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