MSP430FR6889 Datasheet, PDF (157/176 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP430FR6889, MSP430FR68891, MSP430FR6888, MSP430FR6887
MSP430FR5889, MSP430FR58891, MSP430FR5888, MSP430FR5887
SLASE32A – AUGUST 2014 – REVISED MARCH 2015
7.2.3.4 Layout Guidelines
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 the table in
Section 7.2.3.1) for additional guidance. Also see Section 7.1.6 for more information that is applicable to
this topic.
Copyright © 2014–2015, Texas Instruments Incorporated
Applications, Implementation, and Layout 157
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