Datasheet

Electrical characteristics STM32F303xB STM32F303xC
104/133 DocID023353 Rev 7
6.3.18 ADC characteristics
Unless otherwise specified, the parameters given in Table 66 to Table 68 are guaranteed by
design, with conditions summarized in Table 22.
Table 66. ADC characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Analog supply voltage for
ADC
2-3.6V
V
REF+
Positive reference voltage 2 - V
DDA
V
f
ADC
ADC clock frequency 0.14 - 72 MHz
f
S
(1)
Sampling rate
Resolution = 12 bits,
Fast Channel
0.01 - 5.14
MSPS
Resolution = 10 bits,
Fast Channel
0.012 - 6
Resolution = 8 bits,
Fast Channel
0.014 - 7.2
Resolution = 6 bits,
Fast Channel
0.0175 - 9
f
TRIG
(1)
External trigger frequency
f
ADC
= 72 MHz
Resolution = 12 bits
- - 5.14 MHz
Resolution = 12 bits - - 14 1/f
ADC
V
AIN
Conversion voltage range
(2)
0-V
REF+
V
R
AIN
(1)
External input impedance - - 100 k
C
ADC
(1)
Internal sample and hold
capacitor
-5-pF
t
STAB
(1)
Power-up time 0 0 1 µs
t
CAL
(1)
Calibration time
f
ADC
= 72 MHz 1.56 µs
112 1/f
ADC
t
latr
(1)
Trigger conversion latency
Regular and injected
channels without conversion
abort
CKMODE = 00 1.5 2 2.5 1/f
ADC
CKMODE = 01 - - 2 1/f
ADC
CKMODE = 10 - - 2.25 1/f
ADC
CKMODE = 11 - - 2.125 1/f
ADC
t
latrinj
(1)
Trigger conversion latency
Injected channels aborting a
regular conversion
CKMODE = 00 2.5 3 3.5 1/f
ADC
CKMODE = 01 - - 3 1/f
ADC
CKMODE = 10 - - 3.25 1/f
ADC
CKMODE = 11 - - 3.125 1/f
ADC
t
S
(1)
Sampling time
f
ADC
= 72 MHz 0.021 - 8.35 µs
1.5 - 601.5 1/f
ADC
T
ADCVREG
_STUP
(1)
ADC Voltage Regulator
Start-up time
--10µs