Power supply for ADG451/452

Good morning,

I have a question regarding the IC ADG451/452 and the power supply required for its functioning. Is it possible to run it from a +9 V analog supply? And from a +5 V? I read in the datasheet that the IC should be functional as long as the supply is equal or higher than the 5 V logic supply, but when I used the LT Spice model  and simulated it, it works only with a supply of 12 V.

Thank you,

Alessandro

    •  Analog Employees 
    on Jul 20, 2020 11:24 AM 4 months ago

    Hi, Alexito.

    The ADG451/452/453 is specified from +/-5 V to +/-16.5 V (dual supply), and +5 V to +16.5 V (single supply). Thus, it should work as long as your supplies are within these ranges. Please, bear in mind that the signal range is from rail-to-rail, which means that your input signal should not be greater than the supply voltages.

    Which LTspice model are you using, the one from the product page or the one in LTspice library? Could you share the schematic of how you are using the ADG451/452?

    Yours sincerely,

    Igor Ono.

  • Good morning Igor,

    Thank you for your reply. I used the model that I found in the product page (the model of ADG451). If you read the .cir file indeed it is written that it works only with a supply of 12 V up to 16.5 V

    I am planning to use the IC to realize an H-bridge configuration, with a current to be delivered at the output (resistor R4), as it visible in the picture below: