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ADS804 / 1.8V interface

Other Parts Discussed in Thread: ADS804, ADS6122

Hi,

I'm seeking ADC as following specifications.

・12bits、10MSPS、1channel、1.8V interface

Does ADS804 meet 1.8V interface ? If not, would you tell me equivalent products ?

Best Regards,

Kato

  • Hi,

    At the time that the ADS804 was designed, there was an effort to separate the supply for the digital outputs from the analog supply so that the ADC could support either 5V digital logic or 3V digital logic.  There was not at that time the need for 1.8V digital logic and so the device was never characterized for 1.8V on the supply for the digital logic.  I could not say whether it would work with 1.8V on VDRV.  It certainly would not be guaranteed since it was never tested for that.

    For an alternative, please consider the ADS6122.  It is a single channel 12 bit ADC and the minimum sampling rate is 1Msps so it would support your 10Msps requirement.  The device can support either LVDS or 1.8V CMOS for the digital side, so that should also meet your requirement.

    Regards,

    Richard P.