FS32K142MHTXMLLTR datasheet(57/100 Pages) NXP

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Figure 14. ADC input impedance equivalency diagram

6.4.1.2 12-bit ADC electrical characteristics

NOTE

• ADC performance specifications are documented using a

single ADC. For parallel/simultaneous operation of both

ADCs, either for sampling the same channel by both ADCs

or for sampling different channels by each ADC, some

amount of decrease in performance can be expected. Care

must be taken to stagger the two ADC conversions, in

particular the sample phase, to minimize the impact of

simultaneous conversions.

• On reduced pin packages where ADC reference pins are

shared with supply pins, ADC analog performance

characteristics may be impacted. The amount of variation

will be directly impacted by the external PCB layout and

hence care must be taken with PCB routing. See AN5426

for details

• All accuracy numbers assume the ADC is calibrated with

VREFH=VDDA=VDD, with the calibration frequency set to

less than or equal to half of the maximum specified ADC

clock frequency.

ADC electrical specifications

S32K1xx Data Sheet, Rev. 12, 02/2020

NXP Semiconductors

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