Texas Instruments INA293B3QDBVRQ1, Automotive AEC-Q100, Current Sense Amplifier, 1 Circuit, 1 MHz -3dB Bandwidth, 2.5V/µs Slew Rate, 10 µV Offset, 2.7V to 20V Supply, SOT-23-5.
| Parameter | Value |
|---|---|
| Series | Automotive, AEC-Q100 |
| Mounting | Surface Mount |
| Amplifier type | Current Sense |
| Voltage - input offset | 10 µV |
| Voltage - supply span | 2.7 V |
| Current - supply | 1.5mA |
| Current - input bias | 20 µA |
| Operating temperature | -40°C ~ 125°C (TA) |
| -3db bandwidth | 1 MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Slew rate | 2.5V/µs |
| Case | SC-74A, SOT-753 |
| Number of circuits | 1 |
Together they allow the amplifier to resolve millivolt-level drops across a sense resistor — the kind of signal you see when monitoring a 10 mΩ shunt carrying a few hundred milliamps. The 1.5 mA supply current is modest enough to keep the thermal budget in check on a densely populated automotive ECU.
Supplied in a SOT-23-5 package (SC-74A, SOT-753), surface-mount only.
The INA4290A2IRGVR is a quad-channel current sense amplifier with similar bandwidth (1.1 MHz) and offset (6 µV), but it comes in a different package and draws 1.3 mA per channel. For a single-channel replacement, the INA254A1IPWAR offers a zero-drift architecture with 350 kHz bandwidth and 2.4 V/µs slew rate, though its supply range and package differ. Neither is a direct pin-for-pin substitute — verify the footprint and supply rails before swapping.
Yes. As a current sense amplifier, it is designed to measure the voltage across a shunt resistor placed between the supply rail and the load (high-side) or between the load and ground (low-side). The wide supply range of 2.7 V to 20 V accommodates common automotive battery rails.