Op-amp recomendations
I need to find a generic (preferably) single supply Rail-to-rail op-amp. I
would like rail to rail or close to it on both the input and output. An
op-amp with a high current output would also be prefered.
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would like rail to rail or close to it on both the input and output. An
op-amp with a high current output would also be prefered.
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
Comments
AD8041 comes close, but input common mode doesn't reach + rail, and I doubt
if it's generic...
>I need to find a generic (preferably) single supply Rail-to-rail op-amp. I
>would like rail to rail or close to it on both the input and output. An
>op-amp with a high current output would also be prefered.
Mike Hardwick, for Decade Engineering -- <http://www.decadenet.com>
Manufacturer of the famous BOB-II Serial Video Text Display Module!
I
>would like rail to rail or close to it on both the input and output. An
>op-amp with a high current output would also be prefered.
There are a lot of choices now, from National, TI, Maxim and Linear,
Burr-Brown and Analog Devices. One good approach is to get on their web
sites and use their parameter tables. Narrow it down with other specs:
accuracy, CMRR, bandwidth, power supply current, minimum and maximum power
supply voltage, packaging, etc etc.. You might take a look at the LMC6582
from National. OR, the LT1490 from Linear Tech is very nice, and popular,
but practically impossible to get ahold of in distribution. Or the
MAX4292, which like most Maxim chips, is only available in surface mount.
Or the TLV245x family. Most web sites will send you samples. If you need
to adapt from a SOIC-8 package, remember that Steve Roberts is selling
little adatper circuit boards.
There is a large range of bandwidth versus power supply specs. The low
power supply current (down to 1 microamp and 1.1 volt supply) is achieved
by pushing the bandwidth down to kilohertz. R-R op amps running at higher
voltages and currents are available with bandwidths up to around 20hz.
regards,
-- Tracy