INA290: Input timing

? ??

Part Number: INA290

Tool/software:

Dear Support,

I am planning to use INA290,

Can I input voltage to the IN+ pin with no power input to Vs?
Is it OK if voltage is input to IN+ before Vs power is input, or if Vs is turned off while IN+ is input?

Thank you

Ootani

over 1 year ago

+1 Clemens Ladisch over 1 year ago

Guru 314350 points

There is no clamping diode (otherwise, 120 V inputs would not be possible), and the absolute maximum ratings allow this.

As shown in figures 6-14…6-18 for V_S = 0 V, input bias currents still flow.

+1 Mitch M over 1 year ago

TI__Mastermind 25325 points

Hey Ootani-san

Yes, Clemens is correct, you can have the voltage at IN+ while there is no power on Vs.

Regards,

Mitch

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INA290: Input timing