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AD7606 voltage supply

Question asked by laohu on May 11, 2014
Latest reply on May 15, 2014 by laohu

    Hello everyone,

    I'm in need of some help...

    The supply voltage(AVCC)  of AD7606 would effected by digital voltage(+3.3V),my device work in the Byte Read Mode, so Pin6(Par'/Sel) connected to 3.3V, I disable the sleep mode . when Pin6 connected to 3.3V, the AVCC(+5V) would suddenly drop to 3V. Its so confused.

    what confused more is that when Pin6(Par'/Sel) and pin7(STBY') disconnect to Vcc ,I mean float, AVCC would be correct. Vdrive pin is connected directly to 3.3V. Thanks for your attention.