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INA280: Application Problems

Part Number: INA280
Other Parts Discussed in Thread: OPA192

Tool/software:

Hi

The customer is using INA280A4 for output current detection, and the application circuit is the same as the typical circuit on the first page of the datasheet. However, at the moment of power on and off, the amplifier output will have an abnormal waveform as shown in the attachment. If the OPA192 series is used, there will be no such problem. Therefore, I would like to understand the reason why INA280A4 has this abnormal waveform.

CH1Vout, Load voltage

CH3OP output

CH412Vsb, OP Vcc