ADG3123 analog voltage range

To whom it may concern, 

I am intrigued by the ADG3123 because it affords logic-level to high-voltage bipolar outputs. However, I do not necessarily need the high voltage range specified in the part datasheet. Can this part operate at VDDA=VDDB=3V or VDDA=VDDB=5V and VSS=0V levels? This is a typical use case for my application. 

While the datasheet describes the min recommended VDDB to GND and VDDB to VSS is 10.8V, I believe my above biasing conditions do not violate the absolute max ratings (i.e. VDDA <= VDDB, as well as what is shown in the screen capture below).

Please advise.

Thank you kindly,


  • 0
    •  Analog Employees 
    on Jan 26, 2021 4:26 AM 2 months ago in reply to strocchia1

    Hi Scott,

    The ADG1234 is a Quad Single Pole, Double Throw (SPDT) switch that is not capable of level translation between the input and output.

    The level translators are capable of translating voltages to a higher (up translate) or lower (down translate) levels. The ADG3123 is a level translator that translates the input signals into voltage output levels set by the VDDA, VDDB, and VSS supplies.

    For us to further identify the specific part (switch or level translator) that is best suited for your application, can you send us a copy of your schematic here or through email where you used the ADG1234?

    Best regards,

  • 0
    •  Analog Employees 
    on Jan 29, 2021 3:03 AM 2 months ago

    This post has been taken offline.