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AD7609 wrong BIT output on DB14 and DB15

Question asked by sons on Nov 15, 2017
Latest reply on Nov 22, 2017 by jcolao



We use an AD7609 with the parallel interface and sample values at 50KHz. In the measured values are some peaks to 0V or -5V.



We noticed that the data lines DB14 and DB15 looks different then DB0 to DB13.

        wrong DB14/DB15


The bus DB14 / 15 is also pulled high although CS is no longer active.

      bus is driven High


Has somebody a idea? Do we have something look over in the datasheet?


many thanks