Information

DocID022152 Rev 4 129/185
STM32F405xx, STM32F407xx Electrical characteristics
CAN (controller area network) interface
Refer to Section 5.3.16: I/O port characteristics for more details on the input/output alternate
function characteristics (CANTX and CANRX).
5.3.20 12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 67 are derived from tests
performed under the ambient temperature, f
PCLK2
frequency and V
DDA
supply voltage
conditions summarized in Table 14.
Table 67. ADC characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Power supply 1.8
(1)
-3.6V
V
REF+
Positive reference voltage 1.8
(1)(2)(3)
-V
DDA
V
f
ADC
ADC clock frequency
V
DDA
= 1.8
(1)(3)
to
2.4 V
0.6 15 18 MHz
V
DDA
= 2.4 to 3.6 V
(3)
0.6 30 36 MHz
f
TRIG
(4)
External trigger frequency
f
ADC
= 30 MHz,
12-bit resolution
- - 1764 kHz
- - 17 1/f
ADC
V
AIN
Conversion voltage range
(5)
0 (V
SSA
or V
REF-
tied to ground)
-V
REF+
V
R
AIN
(4)
External input impedance
See Equation 1 for
details
--50κΩ
R
ADC
(4)(6)
Sampling switch resistance - - 6 κΩ
C
ADC
(4)
Internal sample and hold
capacitor
-4-pF
t
lat
(4)
Injection trigger conversion
latency
f
ADC
= 30 MHz - - 0.100 µs
--3
(7)
1/f
ADC
t
latr
(4)
Regular trigger conversion
latency
f
ADC
= 30 MHz - - 0.067 µs
--2
(7)
1/f
ADC
t
S
(4)
Sampling time
f
ADC
= 30 MHz 0.100 - 16 µs
3-4801/f
ADC
t
STAB
(4)
Power-up time - 2 3 µs