INA139NA/250
Active2.7 TO 36V, 440KHZ VARIABLE GAIN CURRENT SENSE AMPLIFIER
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INA139NA/250
Active2.7 TO 36V, 440KHZ VARIABLE GAIN CURRENT SENSE AMPLIFIER
Technical Specifications
Parameters and characteristics for this part
| Specification | INA139NA/250 |
|---|---|
| Accuracy | 0.5 % |
| Function | Current Monitor |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | SC-74A, SOT-753 |
| Sensing Method | High-Side |
| Supplier Device Package | SOT-23-5 |
| Voltage - Input [Max] | 40 V |
| Voltage - Input [Min] | 2.7 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.40 | |
| 10 | $ 1.78 | |||
| 25 | $ 1.62 | |||
| 100 | $ 1.45 | |||
| Digi-Reel® | 1 | $ 2.40 | ||
| 10 | $ 1.78 | |||
| 25 | $ 1.62 | |||
| 100 | $ 1.45 | |||
| Tape & Reel (TR) | 250 | $ 1.37 | ||
| 500 | $ 1.32 | |||
| 750 | $ 1.30 | |||
| 1250 | $ 1.27 | |||
| 1750 | $ 1.26 | |||
| 2500 | $ 1.24 | |||
| 6250 | $ 1.21 | |||
| Newark | Each (Supplied on Full Reel) | 250 | $ 4.12 | |
| 500 | $ 4.03 | |||
| 1000 | $ 3.97 | |||
| 1500 | $ 3.95 | |||
| 2500 | $ 3.92 | |||
| Texas Instruments | SMALL T&R | 1 | $ 2.02 | |
| 100 | $ 1.67 | |||
| 250 | $ 1.20 | |||
| 1000 | $ 0.90 | |||
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.
Documents
Technical documentation and resources
