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what is true bipolar input in ads8556?

Panut Tavilsup
Prodigy 30 points
Other Parts Discussed in Thread: ADS8556

Hello.  Can anybody tell me, what is true bipolar input in ads8556?  If I have an AC source(around +- 10V ), how do I connect  this 2-wire AC to ads8556?(between CH_A0 and AGND?  Am I right?)  Thank you.

  • 0
    TI__Guru 55466 points

    Hi Panut,

    True bipolar input means that the device offers programmable input range up to +/-12V  (+/-4 VREF).   The user will typically set the analog input supplies HVDD/HVSS to +/-15V.  Yes, the user will typically connect the input AC signal to CH_X and AGND as shown on the ADS855xEVM evaluation board schematic.

    Thank you and Regards,

    Luis