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Original question:

DRV8323: current sense amplifier ringing

DRV8323: Confusion regarding the input pins of current sense amplifier.

abhishek saini1
Prodigy 10 points
Part Number: DRV8323

Hi,

I'm having a confusion regarding the input pins of current sense amplifier.

In datasheet the Fig 38 shows that the SPx is connected to the negative terminal of Current sense amplifier.

But under the section 8.6.2.5 CSA Control Register it is given the SPx will be connected to positive input of Current sense amplifier.

Can you please clarify this doubt.

Thanks.

  • 0
    TI__Guru 65320 points

    Abhishek,

    We still consider the SPx terminal the positive input of the CSA even if internally it goes to the "-" input of the amplifier since the SPx node is usually higher in voltage than the SNx node which should be GND.

    Regards,

    -Adam