I'm not quite sure how the reference pin effects the output. If  I'm using single supply operation of 3.3V and will bias the reference pin at half of this, would this result in the output being at 1.65V for a differential input voltage of 0V or would it provide 0V at the output?

Thanks in advance for any help

  • +1
    •  Analog Employees 
    on Sep 18, 2019 8:58 AM over 1 year ago

    Hi EngJunkie,

    The voltage across the reference pin can level shift the output. This is useful to ensure that the output voltage is above the output headroom or to match the  input voltage range of the next stage like ADC. So for question, having a single supply voltage of 3.3V; reference pin bias at 1.65V;  0V differential input, -- the output voltage will be 1.65V with reference to ground.

    Best regards,