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LMP8602-Q1: about CMVR

Arie Li
Expert 3390 points
Part Number: LMP8602-Q1

Hi Experts,

Datasheet shows that the CMVR at Vs=3.3V is -4V-27V and the CMVR at Vs=5V is -22V to 60V, so what's the CMVR when Vs=0V? Besides this device, do you have any automotive bi-directional current senisng amplifier that can withstand at least -16V at IN+/IN- pins? Thank you.

  • 0
    TI__Mastermind 18780 points

    Arie,

    While the input pins should be able to stand up to some amount of voltage on the input pins during this condition, unfortunately, we do not characterize the device at Vs = 0V, as the part will not be powered on, and I can't say with certainty the voltage amounts that can be applied without potential damage to the device. 

    Apart from the LMP8602-Q1, we have a few additional offerings in the automotive catalog that will go down to -16V, but these are all unidirectional devices. You can view them here. If a bidirectional scheme is needed, you could try implementing the method shown in Figure 22 of the INA19xA-Q1 datasheet.