AD7763 SYNC Signal

Hi, all

I'm thinking about using two devices and I don't understand how to control SYNC signal.

So would you show me the timing chart by using SYNC signal?


Thanks.

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  • 0
    •  Analog Employees 
    on Dec 22, 2014 5:57 PM

    Hi Jim_Jim,

         There will be some changes on the datasheet. Below is the recommended /SYNC timing diagram for the AD7763.

         The AD7763 goes to /SYNC  when the MCLK falling edge senses the /SYNC pin low. This resets the digital filter sequencer to 0. The /SYNC pin must be take low for a minimum of 4 MCLK cycles. When the MCLK falling edges sense the /SYNC  has returned to logic high, the AD7763 begins to gather samples simultaneously. Please also take note that /SYNC rising and falling edge stay clear of the MCLK falling edge (as it is sampled on this edge).

    Regards,

    Jonathan

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  • 0
    •  Analog Employees 
    on Dec 22, 2014 5:57 PM

    Hi Jim_Jim,

         There will be some changes on the datasheet. Below is the recommended /SYNC timing diagram for the AD7763.

         The AD7763 goes to /SYNC  when the MCLK falling edge senses the /SYNC pin low. This resets the digital filter sequencer to 0. The /SYNC pin must be take low for a minimum of 4 MCLK cycles. When the MCLK falling edges sense the /SYNC  has returned to logic high, the AD7763 begins to gather samples simultaneously. Please also take note that /SYNC rising and falling edge stay clear of the MCLK falling edge (as it is sampled on this edge).

    Regards,

    Jonathan

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