Yeah, I had ran into the MAX9611/9612 myself.   It's one of those 'so=20
close' type of options.   I actually really like the idea of the ADC=20
integrated...  If it was even 5V more on the top end, I wouldn't be=20
having this discussion...   It's just a bit too close for my comfort. =20
It might actually be where I end up back at.

Theres also a MAX9643 which is amplifier only which is sort of the=20
similar situation.

-forrest

On 4/22/2012 8:44 AM, Mark Hanchey wrote:
> On 4/22/2012 4:49 AM, Forrest Christian wrote:
>> 1) I am unable to find any difference amplifier which runs at 3.3V and
>> supports the necessary common mode range of 0 (-2 would be better) to
>> 65V.   Some are close (the AD8207 for instance looks great until you
>> realize the +65V is only at 5V).   I'm ok with one which has an
>> integrated ADC as well...    I also am hoping for something which is a
>> $1-$2 part, not a $5 part, since I use a lot of these on these boards.
> The closest thing I could find is the Max9611.  It runs from at least
> 2.7V and supports -.3v to 60V  and differential max of +-65V.   It is a
> bit more than just an amplifier, it includes ADC and i2C interfaces but
> the price doesn't seem too high, showing $2.68 at mouser qty 1.
>
> Hope you find something that works.
> Mark Hanchey
>
>
>
>

--=20
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