STM32F051x4 STM32F051x6 STM32F051x8
Electrical characteristics
Figure 25. ADC accuracy characteristics
966$
(2
(7
(/
/6%,'($/
(*
([DPSOHRIDQDFWXDOWUDQVIHUFXUYH
7KHLGHDOWUDQVIHUFXUYH
(QGSRLQWFRUUHODWLRQOLQH
('
(7 7RWDO8QDMXVWHG(UURUPD[LPXPGHYLDWLRQ
EHWZHHQWKHDFWXDODQGLGHDOWUDQVIHUFXUYHV
(2 2IIVHW(UURUPD[LPXPGHYLDWLRQ
EHWZHHQWKHILUVWDFWXDOWUDQVLWLRQDQGWKHILUVW
LGHDORQH
(* *DLQ(UURUGHYLDWLRQEHWZHHQWKHODVW
LGHDOWUDQVLWLRQDQGWKHODVWDFWXDORQH
(' 'LIIHUHQWLDO/LQHDULW\(UURUPD[LPXP
GHYLDWLRQEHWZHHQDFWXDOVWHSVDQGWKHLGHDORQHV
(/ ,QWHJUDO/LQHDULW\(UURUPD[LPXPGHYLDWLRQ
EHWZHHQDQ\DFWXDOWUDQVLWLRQDQGWKHHQGSRLQW
FRUUHODWLRQOLQH
9''$
069
Figure 26. Typical connection diagram using the ADC
5$,1
$,1[
9$,1
&SDUDVLWLF
9''$
97
97
,/ “ —$
6DPSOHDQGKROG$'&
FRQYHUWHU
5$'&
ELW
FRQYHUWHU
&$'&
069
1. Refer to Table 52: ADC characteristics for the values of RAIN, RADC and CADC.
2.
Cpapdaracsaitpicarceitparnecseen(rtsouthgehlcya7papcFi)ta. nAcheigohf
this, fADC should be reduced.
the PCB
Cparasitic
(dependent on soldering and PCB layout quality) plus the
value will downgrade conversion accuracy. To remedy
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 13: Power supply
scheme. The 10 nF capacitor should be ceramic (good quality) and it should be placed as
close as possible to the chip.
DocID022265 Rev 7
79/122
90