Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | INA2181A1IDSQR | INA2181 Series |
|---|---|---|
| -3db Bandwidth | 350 kHz | 105 - 350 kHz |
| Amplifier Type | Current Sense | Current Sense |
| Current - Input Bias | 75 µA | 75 µA |
| Current - Supply | 356 µA | 356 µA |
| Gain Bandwidth Product | - | 105 - 350 kHz |
| Grade | Automotive | Automotive |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Circuits | 2 | 2 |
| Operating Temperature [Max] | 125 °C | 125 °C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Package / Case | 10-WFDFN Exposed Pad | 10-WFDFN Exposed Pad, 10-TFSOP, 10-MSOP |
| Qualification | AEC-Q100 | AEC-Q100 |
| Slew Rate | 2 V/µs | 2 V/µs |
| Supplier Device Package | 10-WSON (2x2) | 10-WSON (2x2), 10-VSSOP |
| Voltage - Input Offset | 100 çV | 100 çV |
| Voltage - Supply Span (Max) [Max] | 5.5 V | 5.5 V |
| Voltage - Supply Span (Min) [Min] | 2.7 V | 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 | N/A | 1 | $ 0.64 | |
| 10 | $ 0.45 | |||
| 25 | $ 0.40 | |||
| 100 | $ 0.35 | |||
| 250 | $ 0.33 | |||
| 500 | $ 0.31 | |||
| 1000 | $ 0.30 | |||
| 3000 | $ 0.29 | |||
| 6000 | $ 0.28 | |||
| 9000 | $ 0.28 | |||
| 15000 | $ 0.27 | |||
| 21000 | $ 0.27 | |||
| 30000 | $ 0.27 | |||
| Digikey | Cut Tape (CT) | 1 | $ 0.76 | |
| 10 | $ 0.67 | |||
| 25 | $ 0.63 | |||
| 100 | $ 0.51 | |||
| 250 | $ 0.48 | |||
| 500 | $ 0.41 | |||
| 1000 | $ 0.33 | |||
| Digi-Reel® | 1 | $ 0.76 | ||
| 10 | $ 0.67 | |||
| 25 | $ 0.63 | |||
| 100 | $ 0.51 | |||
| 250 | $ 0.48 | |||
| 500 | $ 0.41 | |||
| 1000 | $ 0.33 | |||
| Tape & Reel (TR) | 3000 | $ 0.29 | ||
| 6000 | $ 0.27 | |||
| 15000 | $ 0.26 | |||
| 30000 | $ 0.25 | |||
| LCSC | N/A | 1 | $ 0.60 | |
| 10 | $ 0.50 | |||
| 30 | $ 0.44 | |||
| 100 | $ 0.38 | |||
| 500 | $ 0.37 | |||
| 1000 | $ 0.36 | |||
| Mouser Electronics | N/A | 1 | $ 0.64 | |
| 10 | $ 0.41 | |||
| 100 | $ 0.33 | |||
| 500 | $ 0.32 | |||
| 1000 | $ 0.30 | |||
| 3000 | $ 0.29 | |||
| 6000 | $ 0.28 | |||
| 9000 | $ 0.27 | |||
| 24000 | $ 0.26 | |||
| TME | N/A | 1 | $ 0.64 | |
| 10 | $ 0.56 | |||
| 25 | $ 0.51 | |||
| 100 | $ 0.49 | |||
| 250 | $ 0.45 | |||
| 500 | $ 0.40 | |||
| 1000 | $ 0.36 | |||
| 3000 | $ 0.33 | |||
| Texas Instruments | LARGE T&R | 1 | $ 0.49 | |
| 100 | $ 0.38 | |||
| 250 | $ 0.28 | |||
| 1000 | $ 0.20 | |||
| Win Source Electronics | N/A | 155 | $ 0.33 | |
| 375 | $ 0.27 | |||
| 580 | $ 0.26 | |||
| 800 | $ 0.25 | |||
| 1035 | $ 0.24 | |||
| 1385 | $ 0.22 | |||
INA2181 Series
26V, dual channel, bi-directional, 350kHz current sense amplifier
| Part | Supplier Device Package | Slew Rate | Voltage - Supply Span (Max) [Max] | Grade | Current - Supply | Voltage - Input Offset | -3db Bandwidth | Mounting Type | Number of Circuits | Voltage - Supply Span (Min) [Min] | Amplifier Type | Package / Case | Current - Input Bias | Qualification | Output Type | Operating Temperature [Min] | Operating Temperature [Max] | Gain Bandwidth Product |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments INA2181A4IDSQR | 10-WSON (2x2) | 2 V/µs | 5.5 V | Automotive | 356 µA | 100 çV | 105 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-WFDFN Exposed Pad | 75 µA | AEC-Q100 | Rail-to-Rail | -40 °C | 125 °C | |
Texas Instruments INA2181A1IDGST | 10-VSSOP | 2 V/µs | 5.5 V | 356 µA | 100 çV | 350 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | Rail-to-Rail | -40 °C | 125 °C | |||
Texas Instruments INA2181A3IDGSR | 10-VSSOP | 2 V/µs | 5.5 V | 356 µA | 100 çV | 150 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | Rail-to-Rail | -40 °C | 125 °C | |||
Texas Instruments INA2181A3IDSQR | 10-WSON (2x2) | 2 V/µs | 5.5 V | Automotive | 356 µA | 100 çV | 150 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-WFDFN Exposed Pad | 75 µA | AEC-Q100 | Rail-to-Rail | -40 °C | 125 °C | |
Texas Instruments INA2181A3QDGSRQ1 | 10-VSSOP | 2 V/µs | 5.5 V | Automotive | 356 µA | 100 çV | 150 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | AEC-Q100 | Rail-to-Rail | -40 °C | 125 °C | 150 kHz |
Texas Instruments INA2181A4IDGST | 10-VSSOP | 2 V/µs | 5.5 V | 356 µA | 100 çV | 105 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | Rail-to-Rail | -40 °C | 125 °C | |||
Texas Instruments INA2181A2QDGSRQ1 | 10-VSSOP | 2 V/µs | 5.5 V | Automotive | 356 µA | 100 çV | 210 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | AEC-Q100 | Rail-to-Rail | -40 °C | 125 °C | 210 kHz |
Texas Instruments INA2181A4IDGSR | 10-VSSOP | 2 V/µs | 5.5 V | 356 µA | 100 çV | 105 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | Rail-to-Rail | -40 °C | 125 °C | |||
Texas Instruments INA2181A2IDGSR | 10-VSSOP | 2 V/µs | 5.5 V | 356 µA | 100 çV | 210 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | Rail-to-Rail | -40 °C | 125 °C | |||
Texas Instruments INA2181A1IDSQR | 10-WSON (2x2) | 2 V/µs | 5.5 V | Automotive | 356 µA | 100 çV | 350 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-WFDFN Exposed Pad | 75 µA | AEC-Q100 | Rail-to-Rail | -40 °C | 125 °C | |
Texas Instruments INA2181A1QDGSRQ1 | 10-VSSOP | 2 V/µs | 5.5 V | Automotive | 356 µA | 100 çV | 350 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | AEC-Q100 | Rail-to-Rail | -40 °C | 125 °C | 350 kHz |
Texas Instruments INA2181A2IDGST | 10-VSSOP | 2 V/µs | 5.5 V | 356 µA | 100 çV | 210 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | Rail-to-Rail | -40 °C | 125 °C | |||
Texas Instruments INA2181A4QDGSRQ1 | 10-VSSOP | 2 V/µs | 5.5 V | Automotive | 356 µA | 100 çV | 105 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | AEC-Q100 | Rail-to-Rail | -40 °C | 125 °C | 105 kHz |
Texas Instruments INA2181A1IDGSR | 10-VSSOP | 2 V/µs | 5.5 V | 356 µA | 100 çV | 350 kHz | Surface Mount | 2 | 2.7 V | Current Sense | 10-MSOP, 10-TFSOP | 75 µA | Rail-to-Rail | -40 °C | 125 °C |
Description
General part information
INA2181 Series
The INA181, INA2181, and INA4181 (INAx181) current sense amplifiers are designed for cost-optimized applications. These devices are part of a family of bidirectional, current-sense amplifiers (also called current-shunt monitors) that sense voltage drops across current-sense resistors at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INAx181 family integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.
These devices operate from a single 2.7-V to 5.5-V power supply. The single-channel INA181 draws a maximum supply current of 260 µA; whereas, the dual-channel INA2181 draws a maximum supply current of 500 µA, and the quad-channel INA4181 draws a maximum supply current of 900 µA.
The INA181 is available in both the 6-pin, SOT-23 and SC70 packages. The INA2181 is available in 10-pin, VSSOP and WSON packages. The INA4181 is available in a 20-pin, TSSOP package. All device options are specified over the extended operating temperature range of –40°C to +125°C.
Documents
Technical documentation and resources