STM32WB50CG datasheet(97/119 Pages) STMICROELECTRONICS

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DS13047 Rev 5

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STM32WB50CG STM32WB30CE

Electrical characteristics

110

6.3.20

Analog-to-Digital converter characteristics

Unless otherwise specified, the parameters given in Table 70 are preliminary values derived

from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage

conditions summarized in Table 20: General operating conditions.

Note:

It is recommended to perform a calibration after each power-up.

Table 70. ADC characteristics(1) (2)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply voltage

3.6

fADC

ADC clock frequency

MHz

Sampling rate

Resolution = 12 bits

2.13

Msps

Resolution = 10 bits

2.46

Resolution = 8 bits

2.91

Resolution = 6 bits

3.55

fTRIG

External trigger

frequency

fADC = 32 MHz

Resolution = 12 bits

2.13

MHz

Resolution = 12 bits

1/fADC

VCMIN

Input common mode

Differential mode

(VREF++

VREF-) / 2

- 0.18

(VREF++

VREF-) / 2

(VREF++

VREF-) / 2

+ 0.18

VAIN (3)

Conversion voltage

range(2)

-0

VREF+

RAIN

External input

impedance

kΩ

CADC

Internal sample and hold

capacitor

tSTAB

Power-up time

Conversion

cycle

tCAL

Calibration time

fADC = 32 MHz

3.625

µs

116

1 / fADC

tLATR

Trigger conversion

latency



Regular and injected

channels without

conversion abort

CKMODE = 00

1.522.5

1/fADC

CKMODE = 01

2.0

CKMODE = 10

2.25

CKMODE = 11

2.125

tLATRINJ

Trigger conversion

latency



Injected channels

aborting a regular

conversion

CKMODE = 00

2.533.5

1/fADC

CKMODE = 01

3.0

CKMODE = 10

3.25

CKMODE = 11

3.125

Sampling time

fADC = 32 MHz

0.078

20.0

µs

2.5

640.5

1/fADC

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