Texas Instruments INA240A1QDRQ1, Automotive AEC-Q100 Current Sense Amplifier, 1 Circuit, 2V/µs Slew Rate, 400 kHz -3dB Bandwidth, 5 µV Input Offset, 2.7-5.5V Supply, 8-SOIC.
| Parameter | Value |
|---|---|
| Series | Automotive, AEC-Q100 |
| Mounting | Surface Mount |
| Amplifier type | Current Sense |
| Voltage - input offset | 5 µV |
| Voltage - supply span | 5.5 V |
| Current - supply | 1.8mA |
| Current - input bias | 90 µA |
| Operating temperature | -40°C~125°C |
| -3db bandwidth | 400 kHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Slew rate | 2V/µs |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Number of circuits | 1 |
Its 5 µV input offset voltage lets it resolve a 10 A load current across a 0.5 mΩ shunt with under 1 % error — useful for motor-winding monitoring, solenoid current profiling, and battery-pack sensing in engine-bay and chassis-domain ECUs.
The 400 kHz -3 dB bandwidth captures current transients in PWM-driven loads — think brushed DC motor phase edges or solenoid flyback pulses — without aliasing the downstream ADC.
The INA240A1QDRQ1 and INA240A2QDRQ1 differ in gain — the A1 variant has a fixed gain of 20 V/V, while the A2 variant has a fixed gain of 50 V/V. Both share the same package, supply range, bandwidth, and AEC-Q100 qualification.
The INA240A1QDRQ1 is not a direct pin-compatible replacement for the INA210 — the INA210 uses a different package (SC-70 vs 8-SOIC) and has a lower supply range. Check the board layout before substituting.