MSP432P411VIPZ datasheet(199/212 Pages) TI1

199 / 212 page

199

MSP432P4111, MSP432P4011, MSP432P411Y

MSP432P401Y, MSP432P411V, MSP432P401V

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SLASEA0A – DECEMBER 2017 – REVISED FEBRUARY 2018

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Product Folder Links: MSP432P4111 MSP432P4011 MSP432P411Y MSP432P401Y MSP432P411V MSP432P401V

Applications, Implementation, and Layout

The reference voltage must be a stable voltage for accurate measurements. The capacitor values that are

selected in the general guidelines filter out the high- and low-frequency ripple before the reference voltage

enters the device. In this case, the 5-µF capacitor is used to buffer the reference pin and filter any low-

frequency ripple. A 50-nF bypass capacitor is used to filter out any high-frequency noise.

7.2.1.3

Layout Guidelines

Place components that are shown in the partial schematic (see Figure 7-3) as close as possible to the

respective device pins. Avoid long traces, because they add additional parasitic capacitance, inductance,

and resistance on the signal.

Avoid routing analog input signals close to a high-frequency pin (for example, a high-frequency PWM),

because the high-frequency switching can be coupled into the analog signal.

If differential mode is used for the Precision ADC, the analog differential input signals must be routed

closely together to minimize the effect of noise on the resulting signal.

MSP432P411VIPZ 데이터시트(PDF) 199 Page - Texas Instruments