AD7745: Start a conversion in single conversion mode

Document created by analog-archivist Employee on Feb 23, 2016
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How to start a conversion in single conversion mode?

 

How to start a conversion in single conversion mode:
It is the operation of writing "010" to the mode bits MD2-MD0 in the
configuration register which starts the conversion.
There is no Start Convert pin or bit.
Once the conversion result is available, the RDY\ pin (and the RDY bit in the
status register) will go low and the MD2-MD0 bits will return to "000".

For continuous conversion, RDY\ will go low when the conversion is complete and
will return high when the result is read.
If the result is not read before the following conversion result is available,
the RDY\ pin goes high briefly before going low again to indicate the
availability of the new conversion result.

The CAPDAC full range (absolute value) is not factory calibrated and can vary
up to ±20% with the manufacturing process. See Fig 17 in the datasheet.

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