SLAS789D June 2014 – August 2018 MSP430FR5986 , MSP430FR5987 , MSP430FR5988 , MSP430FR5989 , MSP430FR59891 , MSP430FR6987 , MSP430FR6988 , MSP430FR6989 , MSP430FR69891
The proper operation of the ESI and the connected sensor front end relies on a good analog board layout. Specifically in case of using the ESI analog front ends to interface with LC type or resistive sensors as typically employed in metering applications, the designer must make sure that the sensitive analog sensor signals are kept separated and guarded from any noise that might occur in the system including but not limited to the switching of LCD segment and common lines, communication signals, or any other type of digital I/O that is toggling. Failure to follow proper precautions may reduce the sensitivity of the solution or may render the application inoperable.
Customers are encouraged to study and follow one of the available TI Designs (see Table 7-2) for additional guidance. Also see Section 7.1.6 for more information that is applicable to this topic.