ST STM32

ADC internal principle AN2834
8/49 DocID15067 Rev 3
Figure 4. Step 1: Compare with V
REF
/2
1. First approximation step. S1 switched to V
REF
.
Figure 5. Step 2: If MSB = 0, then compare with ¼V
REF
1. Compare with ¼V
REF
; if MSB =1. S1 switched back to ground. S2 switched to V
REF
.
DLE
6
6E
&/.
' 4
&/5
35
$
6
6D
9,1
$'&'DWD
$'&&ON
6 6 6 6 6 6 6
& & & & & & & & &
95()
6 6
& &
(TXLYDOHQWFLUFXLW
$
&
&
95()
9&203 ±9,195()
DLE
6
6E
&/.
' 4
&/5
35
$
6
6D
9,1
$'&'DWD
$'&&ON
6 6 6 6 6 6 6
& & & & & & & & &
95()
6 6
& &
(TXLYDOHQWFLUFXLW
$
&
&
95()
9&203 ±9,195()