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Decimal position in ADC/ DAC data

Question asked by jinojs on Jul 24, 2015
Latest reply on Jul 24, 2015 by tlili

Hi,

 

We are using AD9364 with KC705 and have a question on the data interface.

We understand that the data is in 2's complement and the MSB bit is for the sign. But have some confusion when the data is decimal.

 

We need to understand the decimal point position in output of ADC and input to DAC data.

 

1. By default where will be the place of decimal point (in 12 bit)? Will it remain same for both Rx and Tx data?

2. Does it change the position of the decimal point when we apply Rx Gain?

3. Is this position configurable through any registers?

 

We need to know this for customizing the design on our product.

 

Thank you for your quick support,

~Jinoj

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