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AD7768-4: Initialing secquence in Pin MODE

Question asked by midoh on Mar 28, 2018
Latest reply on Mar 29, 2018 by jcolao

Dear all, 

 

I am designing a circuit that drives only one AD7786-4 in Pin Mode.

 

It is connected to a microcontroller and the connected microcontroller can get data in SPI Slave mode.

 

We think that the filter setting and FORMATx setting for Pin mode operation are completed.

 

However, I have questions about the procedure between the initial power-on state of the AD7768-4 and the successful DOUT output.

 

As I understand it, it is guaranteed the normal operation of AD7768-4 by inputting RESET signal after power on.

 

Here, we wonder whether the conversion result is output from DOUT pin after a slight waiting time (initial conversion) after inputting the RESET signal,

 

or whether the conversion result is output from DOUT pin after the START signal is input after the RESET signal input.

 

 

For reference, the START pin is now pull-up to IOVDD in my circuit.

 

 

regards.

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