INA293: Input Bias Current Min and Max plot vs VSENSE

Kazuto Tatsumi

Part Number: INA293

Hi team,

My customer wants to know how is the plot of input bias current IB+ and IB- look like when it's in minimum and maximum, because it seems to be only typical value as started from 20uA. If it's in maximum value, just offset +10uA the line is okay? (I saw the maximum value is IB=30uA on the table).

Regards,
Kazuto

over 3 years ago

+1 Javier Contreras4 over 3 years ago

TI__Mastermind 32260 points

Hello Kazuto,

So the plot for the min and max would have the starting point move up and down by 10µA for the first point to give you the min 10µA and 30µA. The slopes would be similar. For VS = 0 you should expect the same plot.

0 Kazuto Tatsumi over 3 years ago in reply to Javier Contreras4

TI__Intellectual 2820 points

Hi Javier,

Javier Contreras4 said:
So the plot for the min and max would have the starting point move up and down

If the device started from 30uA then the plot almost takes 10uA above, is that correct?

Javier Contreras4 said:
For VS = 0 you should expect the same plot.

Do you mean the plot is just an offset from Typ. VS=0 line when it's Min 10uA and Max 30uA as well as above?

Regards,
Kazuto

+1 Javier Contreras4 over 3 years ago in reply to Kazuto Tatsumi

TI__Mastermind 32260 points

Hello Kazuto,

EC Table is only when VSense = 0V. The starting point I circled can move up or down as Vsense = 0V at that point. For VS=0V I would expect the plot to stay very similar as seen on the plot.

0 Kazuto Tatsumi over 3 years ago in reply to Javier Contreras4

TI__Intellectual 2820 points

Thanks Javier, I understood.

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INA293: Input Bias Current Min and Max plot vs VSENSE