INA138NA/3K
Active2.7 TO 36V, 800KHZ VARIABLE GAIN CURRENT SENSE AMPLIFIER
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INA138NA/3K
Active2.7 TO 36V, 800KHZ VARIABLE GAIN CURRENT SENSE AMPLIFIER
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | INA138NA/3K |
|---|---|
| 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] | 36 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 | $ 2.36 | |
| 10 | $ 1.52 | |||
| 25 | $ 1.30 | |||
| 100 | $ 1.05 | |||
| 250 | $ 0.92 | |||
| 500 | $ 0.85 | |||
| 1000 | $ 0.79 | |||
| Digi-Reel® | 1 | $ 2.36 | ||
| 10 | $ 1.52 | |||
| 25 | $ 1.30 | |||
| 100 | $ 1.05 | |||
| 250 | $ 0.92 | |||
| 500 | $ 0.85 | |||
| 1000 | $ 0.79 | |||
| Tape & Reel (TR) | 3000 | $ 0.71 | ||
| 6000 | $ 0.67 | |||
| 9000 | $ 0.65 | |||
| 15000 | $ 0.63 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.12 | |
| 100 | $ 0.93 | |||
| 250 | $ 0.67 | |||
| 1000 | $ 0.50 | |||
Description
General part information
INA138-Q1 Series
The INA138-Q1 and INA168-Q1 (INA1x8-Q1) devices are high-side, unidirectional, current sense amplifiers. Wide input common-mode voltage range, low quiescent current, and TSSOP and SOT-23 packaging enable use in a variety of applications.
Input common-mode and power-supply voltages are independent, and range from 2.7 V to 36 V for the INA138-Q1, and 2.7 V to 60 V for the INA168-Q1. Quiescent current is only 25 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
