AD790 3.3V Logic Supply ?

Hi,

can the AD790 Comparator Logic Supply Pin be powerd with 3.3V, to Interface directly with LVTTL or LVCMOS33 ?

Thanks Johnny

Parents
No Data
Reply
  • Hi -

    I may be a little late chiming in here, but I agree that a high quality comparator like the AD790 needs to be available with 3.3V logic support.   I checked the AD8468/ADCMP608 data sheets, and they do not support the analog +/-15V range as the 790 does.  

    I note that ITCSteve did some testing at 3.3V and below, which is encouraging, but I am very hesitant to take the risk of designing this into a client's product......severe liability issues if the performance varies between lots, etc etc.   
    AD SUPPORT FOLKS:    PLEASE, PLEASE upgrade the 790 to handle +3.3V logic, document it as supporting 3.3V if it consistently works, or consider a new product.  

    This comparator beats all the others out there, but 3.3V logic for CPLDs and CPUs is simply too ubiquitous nowadays to restrict operation to 5V.

    Thanks!

Children
No Data