MSP430FR2311 with "Smart Analog Combo" Operational Amplifier

RE: MSP430FR2311 with "Smart Analog Combo" Operational Amplifier

DAB — Wed, 22 Aug 2018 20:45:34 GMT

Nice Post.

I will be following your progress with interest.

DAB

RE: MSP430FR2311 with "Smart Analog Combo" Operational Amplifier

genebren — Wed, 22 Aug 2018 16:45:47 GMT

Nice blog on this part. It is interesting to see more and more devices bringing in a bit more of analog. It can be very handy in small project to limit part count by having the processor contain more functionality. Will this op-amp work for everyone? Most likely not. There are so many different application that might need higher performance specifications or, like on board ADCs, the internal noise of the device might limit it's usefulness.

Still, thanks for bringing this to our attention.

Gene

RE: MSP430FR2311 with "Smart Analog Combo" Operational Amplifier

jc2048 — Wed, 22 Aug 2018 08:22:38 GMT

Good blog - I like this sort of thing.

It's an interesting trend, building analogue parts into processors. ST have some similar parts with op amps, too. At a somewhat higher level, I suppose at a push you could include the PSoC devices from Cypress in the general category, though they're really aiming at a different target.

This TI part is nice with its FRAM. It's a shame, though, that they didn't put in a switch to allow the DAC to be connected to the op amp rather than just act as a variable reference for the comparator.

The datasheet says that the 3V/us slew is the fast mode (slow is 1V/uS), so I don't know what is going on with the routines you are calling up. Would be interesting to try it in 'slow mode' and see what result you get - you might have found a bug in their code.

RE: MSP430FR2311 with "Smart Analog Combo" Operational Amplifier

jw0752 — Wed, 22 Aug 2018 04:24:12 GMT

Hi Frank,

Thanks for the peek at this neat piece of hardware. I find it very interesting that they would include Op Amps like this. I look forward to your followup with the MSP430FR2355.

John