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AD9642 Input Offset versus Correction Range

Question asked by phillipsrb on Mar 14, 2018
Latest reply on Mar 21, 2018 by J.Harris

The AD9642 maximum Input offset is stated to be 11mV in data sheet rev 0. This is equivalent to approx 103 bits. However the maximum offset correction range provided via the SPI interface is ± 32 bits. Unless I'm missing something, this seems to imply that it is not always possible to fully correct any DC offset using the chip alone. Does anyone have any comments on this? 

 

Thanks

 

phillipsrb

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