Datasheet

Electrical characteristics STM32L151x6/8/B, STM32L152x6/8/B
94/131 DocID17659 Rev 9
6.3.17 12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 54 are guaranteed by design.
Table 53. ADC clock frequency
Symbol Parameter Conditions Min Max Unit
f
ADC
ADC clock
frequency
Voltage
Range 1 &
2
2.4 V ≤ V
DDA
≤ 3.6 V
V
REF+ =
V
DDA
0.480
16
MHz
V
REF+
< V
DDA
V
REF+
> 2.4 V
8
V
REF+
< V
DDA
V
REF+
≤ 2.4 V
4
1.8 V ≤ V
DDA
≤ 2.4 V
V
REF+ =
V
DDA
8
V
REF+
< V
DDA
4
Voltage Range 3 4
Table 54. ADC characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Power supply - 1.8 - 3.6 V
V
REF+
Positive reference voltage
2.4 V ≤ V
DDA
≤ 3.6 V
V
REF+
must be below
or equal to V
DDA
1.8
(1)
-V
DDA
V
V
REF-
Negative reference voltage - - V
SSA
-V
I
VDDA
Current on the V
DDA
input
pin
- - 1000 1450 µA
I
VREF
(2)
Current on the V
REF
input
pin
Peak
400
700 µA
Average 450 µA
V
AIN
Conversion voltage range
(3)
-0
(4)
-V
REF+
V
f
S
12-bit sampling rate
Direct channels 0.03 - 1
Msps
Multiplexed channels 0.03 - 0.76
10-bit sampling rate
Direct channels 0.03 - 1.07
Msps
Multiplexed channels 0.03 - 0.8
8-bit sampling rate
Direct channels 0.03 - 1.23
Msps
Multiplexed channels 0.03 - 0.89
6-bit sampling rate
Direct channels 0.03 - 1.45
Msps
Multiplexed channels 0.03 - 1