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INA826S: output impedance when disabled

Di Wang
Expert 1740 points
Part Number: INA826S


Hi, 

I want to know the impedance range of output when INA826S is disabled. It is just said 'high impedance' in the datasheet. During I enable/disable INA826S, I saw glitch on the output. Could tell me how this glitch happens?

Thanks.

  • 0
    TI__Genius 15790 points
    Hi Di Wang1,

    The glitch on the output should be documented in the datasheet in figure 61 and 62. This is an expected behavior of the INA826S coming out of its low-power shutdown mode.

    I see no mention in the INA826S datasheet that the output goes high impedance when the device is disabled. Could you point me to where you saw that? I believe that the enable circuitry disables biasing within the amplifier, which wouldn't necessarily ensure a high impedance output.