Texas Instruments INA181A4QDBVRQ1, automotive AEC-Q100 current sense amplifier, single circuit, rail-to-rail output, 105 kHz gain bandwidth, 2 V/µs slew rate, 2.7-5.5 V supply, SOT-23-6 package, -40 to 125°C.
| Parameter | Value |
|---|---|
| Series | Automotive, AEC-Q100 |
| Output type | Rail-to-Rail |
| Mounting | Surface Mount |
| Amplifier type | Current Sense |
| Voltage - input offset | 100 µV |
| Voltage - supply span | 5.5 V |
| Current - supply | 195µA |
| Current - input bias | 75 µA |
| Current - output (Channel) | 8 mA |
| Operating temperature | -40°C ~ 125°C (TA) |
| Gain bandwidth product | 105 kHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Slew rate | 2V/µs |
| Case | SOT-23-6 |
| Number of circuits | 1 |
The 105 kHz gain-bandwidth product means it can track DC load changes and low-frequency ripple, but it won't resolve switching edges in a PWM drive above a few kHz. That's fine for overcurrent detection and average-current feedback loops.
Gain-bandwidth product is 105 kHz and slew rate is 2 V/µs. The rail-to-rail output uses the full ADC input range.
Quiescent current is 195 µA typical.
The INA181A4QDBVRQ1 is the automotive-qualified (AEC-Q100) version of the INA181A4IDBVR. The non-Q version lacks the automotive temperature range and qualification. Functionally they are the same current sense amplifier, but the Q-suffix part is specified for -40°C to 125°C operation and is built to automotive reliability standards.
The INA181A4QDBVRQ1 comes in a SOT-23-6 package. Pin 1 is the output, pin 2 is GND, pin 3 is the negative input, pin 4 is the positive input, pin 5 is V+, and pin 6 is the reference voltage input. The pin 1 indicator is a dot on the top of the package.