32G474 datasheet(140/236 Pages) STMICROELECTRONICS

No. de pieza	32G474

Descripción Electrónicos	Arm® Cortex®-M4 32-bit MCUFPU, 170 MHz / 213 DMIPS, 128 KB SRAM, rich analog, math acc, 184 ps 12 chan Hi-res timer

PDF	236 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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Electrical characteristics

STM32G474xB STM32G474xC STM32G474xE

140/236

DS12288 Rev 4

5.3.19

Analog-to-digital converter characteristics

Unless otherwise specified, the parameters given in Table 66 are preliminary values derived

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

conditions summarized in Table 17: General operating conditions.

Note:

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

Table 66. ADC characteristics(1) (2)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply

voltage

-1.62

3.6

VREF+

Positive

reference

voltage

VDDA ≥ 2 V

VDDA

VDDA < 2 V

VDDA

VREF-

Negative

reference

voltage

-VSSA

VCMIN

Input common

mode

Differential

(VREF++VREF-)/2

- 0.18

(VREF+ +

VREF-)/2

(VREF+ + VREF-)/2

+ 0.18

fADC

ADC clock

frequency

Range 1, single

ADC operation

0.14

MHz

Range 2

Range 1, all ADCs

operation, single

ended mode

VDDA ≥ 2.7 V

0.14

Range 1, all ADCs

operation, single

ended mode

VDDA ≥ 1.62 V

0.14

Range 1, all ADCs

operation,

differential mode

VDDA ≥ 1.62 V

0.14

Sampling rate,

continuous mode

For given

resolution and

sampling time

cycles (ts)

0.001

fADC / (sampling time [cycles] +

resolution [bits] + 0.5)

Msps

TTRIG

External trigger

period

Considering trigger

conversion latency

time (tLATR or

tLATRINJ)

1ms

Resolution =

12 bits,

fADC=60 MHz

tconv + [tLATR or

tLATRINJ]

VAIN (3)

Conversion

voltage range

-0

VREF+

32G474 Datasheet(PDF) 140 Page - STMicroelectronics

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