Datasheet

Table 28. Comparator with 8-bit DAC electrical specifications (continued)
Symbol Description Min. Typ. Max. Unit
I
DAC8b
8-bit DAC current adder (enabled)
3.3V Reference Voltage — 6 9 μA
5V Reference Voltage — 10 16 μA
INL
5
8-bit DAC integral non-linearity –0.75 — 0.75 LSB
6
DNL 8-bit DAC differential non-linearity –0.5 — 0.5 LSB
6
t
DDAC
Initialization and switching settling time — — 30 μs
1. Difference at input > 200mV
2. Applied ± (100 mV + V
HYST0/1/2/3
+ max. of V
AIO
) around switch point.
3. Applied ± (30 mV + 2 × V
HYST0/1/2/3
+ max. of V
AIO
) around switch point.
4. Applied ± (100 mV + V
HYST0/1/2/3
).
5. Calculation method used: Linear Regression Least Square Method
6. 1 LSB = V
reference
/256
NOTE
For comparator IN signals adjacent to V
DD
/V
SS
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
(1nF) should be used to filter noise on input signal. Also, source
drive should not be weak (Signal with < 50 K pull up/down is
recommended).
Figure 14. Typical hysteresis vs. Vin level (VDDA = 3.3 V, PMODE = 0)
ADC electrical specifications
S32K1xx Data Sheet, Rev. 4, 06/2017
NXP Semiconductors
Preliminary
39