K32L2AX datasheet(63/96 Pages) NXP

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RAS

VAS

CAS

ZAS

VADIN

ZADIN

RADIN

CADIN

Pad

leakage

INPUT PIN

SIMPLIFIED

INPUT PIN EQUIVALENT

CIRCUIT

SIMPLIFIED

CHANNEL SELECT

CIRCUIT

ADC SAR

ENGINE

Figure 11. ADC input impedance equivalency diagram

8.6.1.2 16-bit ADC electrical characteristics

Table 35. 16-bit ADC characteristics (VREFH = VDDA, VREFL = VSSA)

Symbol Description

Conditions1

Min.

Typ.2

Max.

Unit

Notes

IDDA_ADC Supply current

0.215

—

1.7

fADACK

ADC asynchronous

clock source

• ADLPC = 1, ADHSC = 0

• ADLPC = 1, ADHSC = 1

• ADLPC = 0, ADHSC = 0

• ADLPC = 0, ADHSC = 1

1.2

2.4

3.0

4.4

2.4

4.0

5.2

6.2

3.9

6.1

7.3

9.5

MHz

tADACK = 1/

fADACK

Sample Time

See Reference Manual chapter for sample times

TUE

Total unadjusted

error

• 12-bit modes

• <12-bit modes

—

±4

±1.4

±6.8

±2.1

LSB4

DNL

Differential non-

linearity

• 12-bit modes

• <12-bit modes

—

±0.7

±0.2

–1.1 to

+1.9

–0.3 to

0.5

LSB4

INL

Integral non-linearity

• 12-bit modes

—

±1.0

–2.7 to

+1.9

LSB4

Table continues on the next page...

Peripheral operating requirements and behaviors

K32 L2A Microcontroller with 512 KB Flash and 128 KB SRAM, Rev. 3, 02/2021

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