> > Well, integral designs like the RCV420/INA168/MAX4137 are
> > factory-trimmed for accuracy. 
> 
> I did miss this feature

That would be the self-contained current monitors. Some require you to
add your own external resistors

> So I guess what you want is an opamp with a fixed (and calibrated)
> amplification?
> 
> I saw that Maxim offers replacements for the MAX472 -- if you're a
> lucky guy you might just try these :)

I think it was the 4072. After hearing so many stories of Maxim being
troublesome with supply I might agree with you about using other parts,
not just from a technical POV

>  Linear also has current sense amps of that type (like the LT1787 or
> LT6100 .... LT1991.

Cheers, will look into them too

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