MCP6441 looks kind of limited in use?

Gain bandwidth and power consumption are interdependent - for example charging and discharging the dominant pole capacitor requires power proportional to the frequency

Well, supply current is only half a microamp!

GBW/Icc is way better than a 741.

Understood..

I just find it a waste of manufacturing..

I did find one that has a GBWP of 100Khz, that is rail to rail and no more than 600 nA of quiescent.

So when I return to work next week I'll have purchasing to get me a few and throw in some pork for myself while I'm at it :)

Jamie

I don't ask for miracles I demand them~! :)

Jamie

You could typically run 23,000+ of the MCP6441 from the same amount of power as a single 741. That's a miracle.

RRIO.

Best regards, Spehro Pefhany

Agreed, though the 741 isn't exactly the gold standard. ;-) Microchip makes some very nice RRIO opamps. Cheap, too. ;-)

And it would make a great micropower noise generator. That's got to be a record for opamp noise density.

Yup, we realize the old 741 is a model T, which is why I am not using such a device like that with what I have in mind. I will say that MChip does have a few interesting chips, I've always looked at them as uC (MPU) type people.

Jamie

I think they bought the linear stuff from someone else- Telcom, IIRC.

Best regards, Spehro Pefhany

For a good self-teaching example, see...

Op-Amp-Config.zip

on the Device Models & Subcircuits Page of my website.

If you work you way line-by-line thru the Spice model you can easily see the interaction between GBW, slew-rate, and current requirements. ...Jim Thompson