Other Parts Discussed in Thread: INA228, INA236, INA190, INA229
My customer is investigating a 5V rail / 5~650mA(Imax) level current sensor solution, they would like to design an sensor can sense low to 5mA with high accuracy, BW is don't care here.
- Do you think INA290 is a good choice here ?
- If I select A1 devices: 20 V/V, and use 250m ohm precision resistance, 5mA*250m ohm * 20 = 25mV.
The VOS of INA290-A1 is 25uV*20=0.5mV. It is really smaller than 25mV, so the result should have high enough accuracy, am I right ?
- Compare to digital output solution INA228 or INA236, which one can perform more highly accuracy at 5mA ?\
- If digital solution is more better here, could you provide your suggest solution ?
Thank you so much.