S32K310 datasheet(88/137 Pages) NXP

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Table 34. Low Power Comparator (LPCMP) (continued)

Symbol

Description

Min

Typ

Max

Unit

Condition

Spec

Number

VAHYST0

Analog Comparator

Hysteresis, Low

Speed mode

—

HYSTCTR[1:0]= 2'b00 —

VAHYST1

Analog Comparator

Hysteresis, Low

Speed mode

—

HYSTCTR[1:0]= 2'b01 —

VAHYST2

Analog Comparator

Hysteresis, Low

Speed mode

—

113

HYSTCTR[1:0]= 2'b10 —

VAHYST3

Analog Comparator

Hysteresis, Low

Speed mode

—

165

HYSTCTR[1:0]= 2'b11 —

INL

DAC integral

linearity 1, 6, 7

-1

—

LSB

vrefh_cmp = vdda,

vrefl_cmp = vss

—

INL

DAC integral

linearity 1, 6, 7

-1.5

—

1.5

LSB

vrefh_cmp < vdda

—

DNL

DAC differential

linearity 1, 6

-1

—

LSB

vrefh_cmp = vdda,

vrefl_cmp = vss

—

DNL

DAC differential

linearity 1, 6

-1.5

—

1.5

LSB

vrefh_cmp < vdda

—

tDDAC

DAC Initialization

and switching

settling time

—

VAIN

Analog input voltage 0

—

VDDA

—

1. vdda is comparator HV supply and internally shorted to VDD_HV_A pin. vss is comparator ground

2. Difference at input > 200mV

3. Applied +/- (100 mV + VAHYST0/1/2/3 + max. of VAIO) around switch point

4. Applied +/- (30 mV + 2 x VAHYST0/1/2/3 + max. of VAIO) around switch point

5. Applied ± (100 mV + VAHYST0/1/2/3 ).

6. 1 LSB = (vrefh_cmp - vrefl_cmp) /256. vrefh_cmp and vrefl_cmp are comparator reference high and low

7. Calculation method used: Linear Regression Least Square Method

For Comparator IN signals adjacent to VDD_HV_A/VDD_HV_B/VSS or XTAL/EXTAL or switching pins cross coupling may

happen and hence hysteresis settings can be used to obtain the desired Comparator performance. Additionally an external

capacitor to ground (1nF) should be used to filter noise on input signal. Also source drive should not be weak (Signal with <50K

pull up/down is recommended).

For devices where the VDD_HV_B domain is present, ACMP0 channels must only be selected/enabled when VDD_HV_A >=

VDD_HV_B. These channels must be disabled when VDD_HV_A goes below VDD_HV_B.

NXP Semiconductors

Analog modules

S32K3xx Data Sheet, Rev. 5.2, 10/2022

Data Sheet: Technical Data

Preliminary Information

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