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MSP430i2x?


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  • 2 weeks later...

Interesting new addition to the family. The fascinating bit is that it appears that they use multiple Sigma-Delta ADCs as apposed to a single ADC with a MUX on the input. According to the docs, there can be up to 8 ADCs on a single CPU and they can capture simultaneous readings. This is pretty serious analog, if it performs as advertised.

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Interesting new addition to the family. The fascinating bit is that it appears that they use multiple Sigma-Delta ADCs as apposed to a single ADC with a MUX on the input. According to the docs, there can be up to 8 ADCs on a single CPU and they can capture simultaneous readings. This is pretty serious analog, if it performs as advertised.

 

It sure does perform as advertised.  The new MSP430i20xx family is initially targeted for low cost embedded e-metering applications, and other industrial markets where high precision analog is a must.  We already have a few TIDesigns posted regarding its usage: http://www.ti.com/tool/TIDM-SERVER-PWR-MON  and http://www.ti.com/tool/TIDC-SMARTPLUG-WIFI

 

In e-meter applications you must sample the voltage and current signals simultaneous, or else you will inject an artificial phase delay that has to be compensated in software.  To accomplish this, all of our meteorology devices have multiple dedicated SD converters.

 

Obviously you can use the high precision analog in other applications as well, but I'll leave that as an exercise for the reader.

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  • 3 weeks later...

Looks like the E2E MSP430 blog has an introductory post about it - http://e2e.ti.com/blogs_/b/msp430blog/archive/2014/11/05/a-new-feather-in-the-cap-new-msp430-industrial-series-microcontrollers-are-here.aspx

For "Industrial" uses, hence the I.  Good temperature tolerances as one might expect (-40 to 105C).

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