AD5757 & AD5755

Hi,

1- I do not want to use Dynamic Power Control in AD5757 and AD5755. Can I connect my 12 volt to Vboost or only min voltage is 15 volt.

2- In AD5755 can I do not connect AVss to -volt And the Vout_x is only 0-5 or 0-10 volt.

Regards,

 

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  • 0
    •  Analog Employees 
    on May 8, 2012 4:24 PM

    Hi,

    Yes if you are not using Vboost, this pin can be tied to 12V no problem.

    We do not specify this as a uni-polar part.  Is it not recommended to leave any supply as a "Do Not Connect".

    You can connect Vss to GND however.  For the particular outputs that you mention there will be a footroom issue, but outside of this it will be linear.  We do not specify the part under these voltage conditions. 

    If you use the AD5755-1 which has the sense in buffer disconnected this footroom is far reduced in the order of 20-30mV. 

    Regards,

    Michael (PDA Applications)

Reply
  • 0
    •  Analog Employees 
    on May 8, 2012 4:24 PM

    Hi,

    Yes if you are not using Vboost, this pin can be tied to 12V no problem.

    We do not specify this as a uni-polar part.  Is it not recommended to leave any supply as a "Do Not Connect".

    You can connect Vss to GND however.  For the particular outputs that you mention there will be a footroom issue, but outside of this it will be linear.  We do not specify the part under these voltage conditions. 

    If you use the AD5755-1 which has the sense in buffer disconnected this footroom is far reduced in the order of 20-30mV. 

    Regards,

    Michael (PDA Applications)

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