About the AD7450 data sheet in Figure 14

Hi
Approximately the same figure is posted on the data sheet of AD 7450 and AD 7450 A.
However, I think there is a mistake in the figure of the AD 7450 data sheet.
My customer is completely confused. I want an engineer's ruling.

AD7450 Rev.A (AD8138 INV.OUT to AD7450 Vin+)

 

AD7450A Rev.D

 

Best regards

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  • 0
    •  Analog Employees 
    on Jun 19, 2018 2:01 AM over 2 years ago

    Hi Mochi,

    There no significant effect if the signal is inverted or not especially in AC performance. But I recommend to use the circuit in figure 34 of AD7450A Rev D datasheet where in the non-inverting output of the amplifier is connected to non-inverting input of the ADC and the other way around with inverting output of the amplifier and inverting input of the ADC.

    Regards,

    Daryl

Reply
  • 0
    •  Analog Employees 
    on Jun 19, 2018 2:01 AM over 2 years ago

    Hi Mochi,

    There no significant effect if the signal is inverted or not especially in AC performance. But I recommend to use the circuit in figure 34 of AD7450A Rev D datasheet where in the non-inverting output of the amplifier is connected to non-inverting input of the ADC and the other way around with inverting output of the amplifier and inverting input of the ADC.

    Regards,

    Daryl

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