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Any changes in AD7367 dual power supply?

Hi, table 7 at page 16 of datasheet has changed from rev. B to rev. D. Is the new one wrong?

In my design (made on rev. B) I use +-5V analog input range and AD7367 is powered with +-5V on Vdd/Vss, I assembled 150 boards and they all work fine, except that ADC saturation is at +-2.5V instead of +-5V.

Since I'm going to produce another batch, I'm worried that something has changed on latest produced 7367s.

Could anyone from ADI clarify this or redirect me to an errata sheet?

Thanks

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  • ahhh .. I missed the VDD VSS delta
    At any rate, I have +/-12V at those pins, so that should be okay.

    I'm kind of glad that you're seeing the same thing when using the internal 2.5V reference though - that was going to be the next thing that I looked at.

    I was worried that I was off by a bit in my parsing of the serial data ...  except that I correctly see the sign change around 0V, which indicates I'm at least seeing the Most Significant Bit correctly ..

    It continues to be a mystery!

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  • ahhh .. I missed the VDD VSS delta
    At any rate, I have +/-12V at those pins, so that should be okay.

    I'm kind of glad that you're seeing the same thing when using the internal 2.5V reference though - that was going to be the next thing that I looked at.

    I was worried that I was off by a bit in my parsing of the serial data ...  except that I correctly see the sign change around 0V, which indicates I'm at least seeing the Most Significant Bit correctly ..

    It continues to be a mystery!

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