Datasheet

DS12323 Rev 2 73/91
STM32L010F4/K4 Electrical characteristics
81
Equation 1: R
AIN
max formula
The presented formula above (Equation 1) is a representation of an hypothetical ideal ADC
and illustrates how the parameters influence each other. It is not to be used for computation
of actual values.
t
STAB
(3)
Power-up time - 0 0 1 µs
t
ConV
(3)
Total conversion time
(including sampling time)
f
ADC
= 16 MHz 0.875 - 10.81 µs
-
14 to 173 (t
S
for sampling +12.5 for
successive approximation)
1/f
ADC
1. V
DDA
minimum value can be decreased in specific temperature conditions.
Refer to Table 53: R
AIN
max for f
ADC
= 16 MHz.
2. A current consumption proportional to the APB clock frequency has to be added
Refer to Table 29: Peripheral current consumption in run or Sleep mode.
3. Guaranteed by design, not tested in production.
4. Standard channels have an extra protection resistance which depends on supply voltage.
Refer to Table 53: R
AIN
max for f
ADC
= 16 MHz.
Table 52. ADC characteristics (continued)
Symbol Parameter Conditions Min Typ Max Unit
R
AIN
T
S
f
ADC
C
ADC
2
N2+
()ln××
--------------------------------------------------------------- -
R
ADC
–<
Table 53. R
AIN
max for f
ADC
= 16 MHz
(1)
T
s
(cycles) t
S
(µs)
R
AIN
max for fast
channels (kΩ)
R
AIN
max for standard channels (kΩ)
V
DD
> 2.7 V V
DD
> 2.4 V V
DD
> 2.0 V V
DD
> 1.8 V
1.5 0.09 0.5 < 0.1 NA NA NA
3.5 0.22 1 0.2 < 0.1 NA NA
7.5 0.47 2.5 1.7 1.5 < 0.1 NA
12.5 0.78 4 3.2 3 1 NA
19.5 1.22 6.5 5.7 5.5 3.5 NA
39.5 2.47 13 12.2 12 10 NA
79.5 4.97 27 26.2 26 24 < 0.1
160.5 10.03 50 49.2 49 47 32
1. Guaranteed by design.
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