| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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33,000 pcs
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33000 pcs | On Request | 1 | On Request | On Request | 20+ | On Request | On Request | |
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30,000 pcs
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30000 pcs | On Request | 1 | On Request | On Request | 25+ | On Request | On Request | |
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18,000 pcs
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18000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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10,000 pcs
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10000 pcs | On Request | 1 | On Request | On Request | 26+ | On Request | On Request | |
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3,000 pcs
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3000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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1,259 pcs
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1259 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The INA139NA/3K from Texas Instruments is a high-side, unipolar current shunt monitor. It is designed for applications requiring accurate measurement of current by monitoring the voltage drop across a shunt resistor. The device features a wide supply and common-mode voltage range, independent of each other, from 2.7V to 40V.
Key electrical characteristics include a low quiescent current of 60µA typical, enabling minimal error when the power supply is connected to either side of the shunt. The gain is set using a single external resistor, allowing for adjustable gain from 1 to over 100. The device offers ±0.5% accuracy and a typical bandwidth of 220kHz.
Packaged in a compact SOT-23-5 surface-mount package, the INA139NA/3K is suitable for space-constrained designs. It operates within an industrial temperature range of -40°C to 125°C, making it versatile for various environments. Applications include automotive, battery chargers, power management, and cell phones.
This current monitor converts a differential input voltage to a current output, which is then converted back to a voltage using an external load resistor. Its design also invites creative applications in measurement and level shifting.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.58 | $0.58 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range for the INA139NA/3K is 2.7V to 40V.
The accuracy of the INA139NA/3K is ±0.5%.
The INA139NA/3K is available in a SOT-23-5 package.
The operating temperature range is -40°C to 125°C.
The typical quiescent current is 60µA.
Yes, the gain is set using a single external resistor and is adjustable from 1 to over 100.
The typical bandwidth is 220kHz.